Trifilar Suspension

Trifilar Suspension
Trifilar Suspension
Summary
The polar moment of inertia for an assembly of solid objects was calculated using the trifilar suspension apparatus. The periodic time for the
experimental and theoretical results were analysed and compared in order to study the relationship between the mass moment of inertia and the mass of
an assembly.
Table of Contents
1. Introduction – page 3 2. Theory – page 4 – 7 3. Apparatus – page 8 4. Procedure – page 9 5. Results – page 10 – 11 6. Discussion – page 12 – 13 7.
Conclusion – page 14 8. References – page 14
Introduction
The moment of inertia I is a measure of the resistance of a body to angular acceleration [1]. An important factor as the resulting moment governs the
analysis ... Show more content on Helpwriting.net ...
Figure 3: Trifilar suspension
Figure 4: Platform arrangement
The solid objects consisted of three solid masses: 1. a cylindrical solid 2. a circular tube 3. a square hollow section
| Mass (kg)| Dimensions (mm)| Circular platform| 2.0| Г 600| Cylinder| 6.82| Г 126| Tube| 2.196| 78 I/D, 98 O/D| Square section| 2.503| A=100, t=6|
Table 2: Apparatus data
A wooden metre stick was used to measure the length of the chains and the radius of each solid object from the centre of the platform – accuracy В±
1mm. Stop watch – accuracy В± 0.01s.
Procedure
The trifilar suspension was assembled and the lengths of the chains were measured, recording their average length. In order to repeat the experiment,

applying the same amount of force each time, a tangential reference line was drawn on the circular platform and marked with a corresponding point on
the table.
At first, the period for five oscillations of an empty platform was recorded and repeated, noting the average time taken for one oscillation. The
platform was then assembled scattering the solid objects and noting their radius from the centre of the platform. Once again the period for five
oscillations was
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Figure Skating Competition Research
Slide 1
During a figure skating competition, many required elements must be included in the program for each skater. Depending on what level of
competition the skater is in, the techniques and difficulty increases. A triple axel is one of the most difficult figure skating jumps. The skater needs to
jump from the outside edge of his or her blade, while moving in a forward rotation, rotating three and a half revolutions in the air, and then landing on
the opposite foot which they took off from. A triple axel is a lot more complicated than performing a single or double axel because it requires an
enormous amount of strength to get high up enough to have time to spin, as well as the ability to rotate quickly.
A skater must balance the average ... Show more content on Helpwriting.net ...
From reducing the angular velocity, the skater won't continue to rotate once they have fallen back onto the ice. Instead, the skater will continue to
glide across the ice. This happens when the skater moves the position of their arms from being tucked into spreading them out to be able to keep their
movement of inertia, as well as, to balance themselves.
Slide 6
In summary, when landing a triple axel in figure skating, the skater should push off with their foot, creating a downward force, when driving down and
off the ice, torque is being set up to give him or her an angular impulse to be able to spin in the air. They bring their arms and legs in closely when in
the air, then spread them out, so they don't continue to turn and lose balance when they come back down to the ice. Finally, it is crucial for figure
skaters to create an enormous amount of height to be able even to attempt the triple

Why Do Not Football Helmets Promote Neck Injuries Essay
The goal of this project is to work towards answering the question of whether or not football helmets promote neck injuries. In order to gather data, a
U of R team made a machine that rapidly changes speed while translating from side to side to stimulate a rotational acceleration and velocity about the
head and neck due to an angular displacement. The purpose of this machine is to simulate an unexpected and sudden change in motion of the head in
order to analyse the resulting motion. The data collected was the rotational position of the head, the linear position of the cart, and the linear position of
a point on the body. All measurements were made with and without a helmet. In order to answer the main question, there had to be a further
understanding of how the mechanics of the head and neck change with the addition of a helmet. To achieve this, MATLAB was used to compute the
resulting velocities and accelerations, the reaction forces at the neck, and the moment about the base of the neck. From these calculations, it is possible
to make observations about how the addition of a helmet affects the dynamics of the head and neck. The code is structured with a script of general
input data such as the given data and labels for plots. All of the given position data was corrected to start at position zero for better comparison between
the positions with and without the helmet. The information was then passed into a function that converted all data into the desired units, computed

Physics of Ice Skating
Many everyday activities, and sports involve physics. During the Olympics, you saw the graceful performance done by the figure skaters. Figure
skating involves a lot of physics. These principles include friction, momentum, and Newton's Third Law. These core principles plays a big impact on
the performance of figure skaters. Before understanding the physics of the ice skater's motion, the first thing to comprehend is the skates itself.
The major parts of figure skates are the boot itself, and the blade. A figure skater performs a spin by rotating the blade backwards as the skater
spins on a fixed point. This fixed point, is also known as the balls of their feet. The skater also has the toe pick, a rigid part of the blade located at
the front of the blade, touching the ice. This allows the skater to put a forward pressure down without sliding forward and falling backwards. It
also helps keep the skater's balance. When the skater performs a jump, he or she pushes off the toe pick, jumps, lands on the toe pick, and then
rocks down to the blade. This also adds stability. The design of the blade allows the skater to rock down to the blade from the toe pick due to the
curvature of the blade. This is called the rocker. The skater imparts the momentum from its opposite leg, back into his lower foot and then continues to
move. This leads to the movement of the figure skater and the laws and principles of physics used to perform them.
Figure skating involves ice, which means there

Vertical Ears Momentum
Many researchers are interested in the generation of angular momentum during turning dance movements. In a study on the pirouette en dehors,
researchers found that skilled dancers generate larger vertical angular momentum as the number of turns increases by predominantly increasing the rate
of momentum generation. Angular momentum is generated when the dancer applies a torque about the vertical axis by pushing sideways in opposite
directions with both feet. The normal fourth position preparation is ideal for creating this angular momentum as the feet exert equal horizontal forces
in opposite directions to produce the twisting effect, or torque (Kim et al., 2014). Thus, the vertical angular momentum is generated from the torque
applied by the feet through the foot. In their book, ... Show more content on Helpwriting.net ...
The action of the push–off foot and the leg is the most important in determining the effectiveness of a traveling leap. To maximize the height and
distance, the dancer should turn his or her foot in so that it points in the direction of the motion. This creates a large available angle of extension
during the takeoff, creating an overall strong leap (Laws & Sugano, 2008). Additionally, according to a study conducted on the effect of jumping
distance on component ankle and knee joint axial forces generated during the landing phase of traveling jumps, dancers must develop more horizontal
velocity during longer jumps to travel farther in the same amount of time as shorter jumps. The results of a study found that, at longer jump distances,
there were significant increases for the peak horizontal ground reaction forces, as predicted. However, the peak ground reaction forces increased at
greater jump distances, which was not anticipated. Therefore, at greater jump distances, greater knee extensor movements were required to reduce the
vertical momentum of the body (Simpson & Kanter,

The Sun And Moon Are Not Present Until The Fourth Day
Given that the Sun and Moon are not present until the fourth day, how can it be maintained that the first three days are days in the sense that we now
understand them? Our current day is delineated via the earth's rotation in relation to the Sun – no Sun, no 24 hour days. Even the passage itself says
this, for it says in Gen. 1:14: "Let there be lights in the expanse of the heavens to separate the day from the night. And let them be . . . for days". It
may be objected that, regardless of whether or not we had a distant object in relation to which we might measure the progression of the earth's rotation,
it nonetheless remained similar to what it is now. But this is by no means clear, for the text itself maintains that the earth was radically and
fundamentally different at that time, being "without form and void" (v. 2). As such, any claim that the earth's rotation then was similar to what it is
now is based on an assumption: namely, that in spite of the fact that the earth itself was physically different, natural processes such as its rotation were
the same then as now.
This is a rather curious claim to make, for it is one of the primary charges leveled against those who adhere to other interpretations of the days (and
correspondingly, the age of the earth) by those with whom we are disputing. Proponents of the calendar–day interpretation frequently charge those with
whom they disagree, whether secular scientists or other believers, of assuming that natural processes in

Bending Moment Lab Report
Applied mechanics laboratory report "Measurement of bending moment and shear forces for structural analysis" Azamat Omarov ID201102658
1.Theory and background 1.1 Summary That performed laboratory session on bending moments and shear forces requires good understanding and
sufficient knowledge of axial forces. Bending is defined as a behavior of any structural element that undergoes the external load, which is applied
perpendicularly to longitudinal axis. That experiment helps us to find the maximum load that can be applied to the beam with rectangular cross
section. Moments are calculated by using statics theory, or multiplying perpendicularly directed load by the respective distance to the pivot point. 1.2
Objective The main objective... Show more content on Helpwriting.net ...
Thar resulted in the maximum bending moment occurred. Moment was calculated in the same manner as in the previous example with only the
difference in direction for positive moment. в€‘MR1(left)= в€‘MR1(right) ; R1*0.2
– P2*0.34=(R2–P3)*0.24; The resultant bending moment was
found to be maximum at the point where shear forces are minimal and thus equals to approximately +0.3856 N.m Regarding the moment about the cut,
here our group was able to find the minimum difference between the measured and calculated values applying the same formulas and assumptions.The
resultant moment was calculated to be 0.225N.m , which is approximately 3% difference and thus can be neglected. It is clear from the bending
moment diagram that there is a point except ends where bending moment equals to zero. Such a point have a different of bending moment on its two
sides (left and right) is known as a point of contra–flexture. It can be easily found by using moment equation about that point and equate it to zero.
Taking that reference point as "X", we obtain: в€‘MX(left)= в€‘MX(right); 5.26*(X
–0.14) = 1.962*X Thus the point of contra flexture for those
specific loads equals 0.223m or 223mm from P1 Figure 7. Bending moment graph 4. Discussion and

A Biomechanical Analysis of the Roundhouse Kick
Anatomical Analysis
Tae Kwon Do is a Korean, unarmed martial art and is best known for its kicks (Park, 2001). The roundhouse kick is a turning kick and happens to be
the most commonly used kick during competition (Lee, 1996). For this reason, the roundhouse kick will be analyzed in reference to sparring
competition. The roundhouse kick, a multiplanar skill, starts with the kicking leg traveling in an arc towards the front with the knee in a chambered
position (Pearson, 1997). The knee is extended in a snapping movement, striking the opponent with the top of the foot. One's goal would be to make
front torso contact with the kick, while avoiding leaving one's self open to a counter strike. The movements that comprise the ... Show more content on
Helpwriting.net ...
H=mk2z
However, because the primary goal is to achieve optimum velocity, optimum momentum is obtained through angular impulse. The series of movements
before contact with the target attempts a kinetic chain with an efficient sequence of movements previously noted in the description of the preparatory
phase (Champion, 2002). The internal muscles move first, such as the serape and spinal flexors and rotators, out to the Gluteus maximus, to the Rectus
femoris, transferring the large body movements from the trunk to the smaller body segments of the foot. If the movements are timed correctly, one will
have maximum speed upon reaching the next movement, until the point of application (Champion, 2002).
Another valuable aspect to consider is drag, which is a resistance force slowing down the motion of the leg and foot through the fluid medium, air
(Hall, 1999). The most relevant form of drag here is surface drag, where the size of one's leg and the increased surface area created by the traditional
uniform, in addition to its texture play prominent roles in decreasing the velocity of the kick.
Once the kick has been executed, impact must be taken into account. The result of the impact of one's foot with the opponent's front

Most Basic Turn In Ballet
The most basic turn in ballet is the pirouette, which is a turn around a vertical axis with one supporting foot on the floor. The pirouette is a "highly
complex and highly organized skill that involves the simultaneous coordination of the head, arms, trunk, knees, and feet" (Denari & Correa, 2013).
There are three stages of a pirouette: the preparation, turn, and landing.
Preparation
The position and movements preceding the actual turn in the pirouette is called the preparation. To start, place your feet in fourth position, in which the
left foot is in front of the right with slightly more than one foot in between the two feet. According to one study, successful turns were executed from
approximately 40% of the dancer's leg length in the ... Show more content on Helpwriting.net ...
Spotting involves choosing one point at which to direct your focus while you turn. As you turn, keep your focus on that one spot and, when you can't
look at it any longer, whip your head around and find the spot again. The main purpose of spotting is to prevent dizziness, since research has shown that
it does not affect the amount of turns generated. The results from a study suggest "that spotting has a negligible effect in generating angular momentum
during the double–support phase of a pirouette." Another source concurred that the rotational momentum of a turn is a quantity, and that the total
rotational momentum of the body can only change if external torque acts on the body. Thus, there is no way that changes in body position alone, which
occurs when a dancer spots their head, can change the total rotational momentum (Laws & Sugano,

Four Methods Of Job Design Essay
Four Methods of Job Design
Job specialization
Job specialization is one of methods of job design. The basic idea of job specialization is to get the employee to stay on one specific task they are
assigned do. As stated by Pride, Hughes and Kapoor, job specialization is the segregation of all the organizational activities into individual tasks and
the allocation of different task to different people. (Pride, Hughes and Kapoor, 2013). For the HRmanagement to perform job specialization they will
first have to start on an organizational structure. Which is to determine each job, its purpose, and where it reports to in the organization. This will
allow a company to execute proper operation procedures and will help company attain their aim. Benefits of job specialization include employee being
able to master his task and quality control cost is also lower to due to specialization (Study.com, 2015)
Job enlargement
Job enlargement is another method of job design. The basic idea of job enlargement is, to give the employee a greater work load through a wide range
of task performed at that level. According to ... Show more content on Helpwriting.net ...
Job enrichment basically means to expand the employees work by increasing the range and intricacy they are told to complete. According to Koontz,
what job enrichment does is to inject into jobs, more challenge and accomplishments (Koontz, 2010). One of the positive outcome of job enrichment
is employees are more motivated. This is because, with the company giving them the chance to grow and upgrade themselves through job enrichment,
they feel more motivated knowing they are advancing. The task they are enforced with are made easy due to the increase of skills level for the
employee. However there are also it's limitations. Most of the employees do not want the type of challenge or responsibility that it handed to them.
After all, it is basic human tendency to want to walk away from a responsibility (Mbaofficial.com,

Reading Comprehension Strategy Of Inferring Essay
Making Inferences WHY:
Purpose of Lesson: The purpose of this lesson is to introduce students to the reading comprehension strategy of inferring. The students will learn how to
use textual evidence combined with their own background knowledge to make inferences about various aspects of a text including characters, setting,
theme, and plot.
Common Core State Standards:
CCSS.ELA–LITERACY.RL.5.1: Quote accurately from a text when explaining what the text says explicitly and when drawing inferences from the text.
Goals/Objectives of Lesson: What do you hope for/expect?
In a small group setting, each student will make at least 3 inferences about various scenarios and pictures through writing and speaking.
Following a teacher's model, each student will write their own short scenario that will be used for their classmates to make inferences about.
When reading a selected chapter from the book, Wonder, students will use a graphic organizer to make at least two written inferences by filling in all
three columns of the organizer (what is stated, what I already know, and myinference).
Extension Activity: Each student will create a short story (either written or verbal) based on their inferences about a picture that will be provided by
the teacher.
Context of the Lesson: Where does this lesson fall in what is currently being taught?
This is the students second week of academics, and this will be their first experience in fifth grade with making inferences. Up until

System of Particles and Rotational Motion Centre of Mass...
SYSTEM OF PARTICLES AND ROTATIONAL MOTION
CENTRE OF MASS AND ROTATIONAL MOTION
INTRODUCTION–
For describing the motion of rigid bodies, we shall introduce the key concept of 'centre of mass'. This concept enables us to understand how we can
apply justifiably the Newton's laws of motion, in essentially the same form to objects of large size including even the astronomical objects like the
planets and the stars.
KINDS OF MOTION OF A RIGID BODY–
A rigid body may have three kinds of motion–
(1)Pure Translation Motion– in such a motion, every particle of the body has the same velocity at a particular instant of time. For e.g. when a
rectangular block slides down an inclined plane, any point like P1,P2 of the block, at any instant of time ... Show more content on Helpwriting.net ...
Hence the centre of mass is closer to the massive particle. NOTE– 1. The centre of mass may lie outside the object. For e.g. the centre of mass of ring
lies outside it. 2. Centre of mass depends on the distribution of mass within the body and is closer to heavy part but for identical particles C.M. lies
at the midpoint of the line joining the point masses. 3. If an object is symmetrical and have uniform distribution of mass then its C.M. coincides with
geometrical centre. 4. The position of C.M. is independent from the coordinate system. E.g. the centre of mass of a ring of uniform thickness is at its
centre whatever be the coordinate system. CENTRE OF MASS OF LAMINAR OBJECTS–
A laminar object means a two dimensional distribution of mass of negligible thickness e.g. paper of your copy. If a large number of laminar type
objects are placed in a plane then

Beyblade Lab Report
Essay
Hypothesis
The prediction of the outcome is that a Stamina type Beyblade will come out on top of Defense type. This prediction is logical because a Stamina
type Beyblade when launched by themselves spin for a longer time period than and Attack or Balance type.
Introduction
What is the difference between centrifugal force and centripetal force? Centrifugal force is the cause of pushing something outward or away. (An
apparent force that acts outward on a body moving around a center, arising from the body's inertia.) Centripetal force is the cause of pulling

Essay Psychological Research Report on Perception
ABSTRACT
People are thought to be able to mentally rotate an object so as to be able to imagine it in a different orientation. In this experiment partcipants were
presented with two three dimensional objects. Some of the pairs of objects where the same object and some of them where different objects.
Partcipants were asked to identify whether the second object was the same as the first one in the pair, even though it was shown as being rotated
around a set angle, or if it was a completely different object. The reaction time of the partcipant's was found to be directly related to the degree of the
angle of which the object was rotated.
METHODS
Participants
A total of 11 subject participated in this experiment. These participants... Show more content on Helpwriting.net ...
The object was rotated to one of 8 possible degrees in increments of 45 degrees from 0 to 360. The structure of the experiment was that the participant
goes to the website and chooses the experiment. Then the participant is asked to give informed consent and the experiment begins. The participant is
presented with a pair of shapes and asked to decide whether the shapes are of the same or different images (whether one can be turned into the other by a
rotation). The participant clicks a button to specify whether the images are the same or different.
RESULTS
The results of this experiment are the mean reaction times that it took the participant to decide whether the example they where presented with was
the same or different object. The means of both of the sets of data clearly shows that as the angle of the rotation of the object increases the reaction
time of the participant increases. When these means are plotted on a graph they clearly show a linear increase in reaction time as the angle of rotation
increases. This continues until the object has been rotated 180 degrees. The reaction time decreases linearly as the object is rotated more and more.
Overall the reaction time for the pairs that are of different objects (where one cannot be made into the other through a rotation are higher) however they
follow the same pattern as the pairs that are of the same objects.
DISCUSSION

Hand Influence On Mental Rotation
Introduction The purpose of this experiments was to study the effects of hand preference on mental rotation. We did so by conducting an experiment
where half of the participants were asked to use their dominant hand to respond to images rotating at one of four degrees or to use their non–dominant
hand. I hypothesize a main effect for angle and hand dominance as well as interaction between the two variables in effecting the response time as well
as the accuracy rate. In an experiment on the mental rotation of three dimensional objects conducted by Shepard and Metzler(1971), the researchers
were looking more in depth of the rotation of these objects. They were either rotations of each object or completely different depictions. The
independent ... Show more content on Helpwriting.net ...
Mixed hand users had significantly greater result than the left hand users meaning that one's ability to perform well may be dependent on their normal
motor habits. Another experiment which focused on the mental rotation of both two dimensional and three dimensional object was conducted by
Sonya Regehr, Lyndon B.J.P. Smith, and Garth N. Smith (1985). They hypothesized that three dimensional objects would be harder to mentally rotate
than two dimensional objects. They found that response time to mirrored objects were significantly less in the two dimensional objects than the three
dimensional objects. They were able to conclude that for larger degrees of rotation, the rate of mental rotation for two dimensional objects is greater
than those for three dimensional objects. In an experiment comparing the differences in gender on mental rotation of three dimensional objects, S.
Marion Tapley and M.P. Bryden (1977) found that men had higher accuracy rates than women and that the slope of function relating to the response
time to degree of rotation was steeper in women. This study suggests that frequent use of visual imagery was related to mental rotation rated in men
and not

A Mathematical Model Of Centripetal Force Essay
Kayla Ward
Formal lab report 1: lab 4
10/9/16
Centripetal Force
Abstract:
The idea of this experiment is to represent a mathematical model of centripetal force. This is obtained using a rubber stopper and various hanging
weights. Using these items one would attach the weighted rubber stoppers to one end of the apparatus and a hanging mass on the opposite end. The
time and number of rotations were recorded for various weight scenarios and then used to graph the square of the orbital period versus the Mass ratio
of the swinging to hanging weight. This was done to show accuracy of the theoretical model in real time. The data obtained from this experiment is
then calculated and plotted on a graph. This information was between a twenty percent confidence interval due to human error. The results shown
below proved the model to be accurate.
Introduction:
The goal of this experiment was to show the difference in centripetal velocity of the rubber stopper as the weight changed between the rubber stopper,
Msb, and the circular weight, MH. Centripetal force is the net force pointing from the body toward a fixed center of curvature. In other words,
centripetal force can be defined as the net force that is central seeking and radial, causing a curved motion to an object. The objective of this
experiment is to study motion, with the concept of centripetal force of a spinning object on the end of a string. As the string rotates around the
apparatus the string follows the

Trunk Rotation Essay
Clinicians frequently assess movement performance during a trunk rotation task to observe
19 biomechanical deficits. The degeneration of the sensory (Brumagne et al., 2004) and motor systems (Horak et
20 al., 1989) is inevitable as age increases; thereby altered movement and/or postural control in older adults is
21 apparent.(Pyykko et al., 1990) For example, compared to younger adults, older adults show less rotational
22 ROM of the cervical spine (Trott et al., 1996) and of the thoracic spine (Baird and Van Emmerik, 2009) during
23 axial trunk rotation while standing as well as in sitting (Doriot and Wang, 2006). A comprehensive
24 investigation on different directions of rotation is required since trunk asymmetry exists during daily activities. ... Show more content on
Helpwriting.net ...
A VAS for pain intensity provides a quantitative measure of subjective pain and a total functional
68 disability score ranging from 0 to 100 mm.(Huskisson, 1983) The pain was generally rated during the
69 individual's daily activities.
70 As indicated in Figure 1, in order to capture the angular displacement of trunk rotation, reflective
71 markers were attached to the bilateral shoulders, the first thoracic spine (T1), the 10th thoracic spine (T10), the
72 first sacrum (S1), and the bilateral posterior superior iliac spines (PSIS). Six digital cameras captured the
73 motion of each marker three–dimensionally (Motion Analysis Corporation, Santa Rosa, CA, USA). The signals
74 from the marker trajectories were filtered with a fourth–order zero–phase Butterworth low–pass filter with a
75 cutoff frequency of 6 Hz to eliminate noise from the raw data with the sampling rate at 100 Hz. The captured
76 data was recorded in a personal computer and further analyzed by customized software in MATLAB (The
3
MathWorks, I 77 nc. Natick, Massachusetts,

Case Analysis Paper: Turner V. Hershey Chocolate USA
Case Analysis Paper / Discussion
MBA 623
Name: Patel Mukeshkumar Shamalbhai
Paper # Turner v. Hershey Chocolate USA, 440 F.3d 604 (3d Cir. 2006)
Word Count: _______
I. Citation: Turner v. Hershey Chocolate USA, 440 F.3d 604 [3d Cir. 2006]
II. Issue and Rule: The district court granted the defendant's motion for summary judgment on the plaintiff's Americans with Disability Act claim. The
plaintiff's is not estopped by her SSDI and long term disability claims.The court foreclosed to grant the plaintiff new trial. The appellate court the
district court's ruling.
The central issue in this case is Hershey's obligation that Turners should participate in its shaker table rotation scheme. In concerning Hershey's motion
for the summary of ... Show more content on Helpwriting.net ...
In determining whether a genuine issue of the material fact whether a genuine issue of material fact occurs regarding the reasonableness of the
requested accommodation, we first examine whether Turners facial presenting that her proposed accommodation is possible. If appellant has made out
a prima facie showing, the load then shifts to prove a favorable defense, that the accommodations requested by Turner are unreasonable or would cause
an undue hardship on the employer. In contrast, If Turner has satisfied her initial burden, Turners proposed accommodation seems practical. At this
time, Hershey rotations policy is new one which had never been required of employees in Turners position. If Turner's proposed accommodation would
permit the new rotation program to endure, even though on a modified basis. Under Turners proposed accommodation, each inspector could continue
to rotate on the hourly basis, with Turners, herself, rotating only between line 8 and 9. Hershey has not put up with that because this is not practical or

The Effect Of The Slat System Essay
In order to gauge any effects the slat system, with various weights, may have on the shock wave, several baseline tests were run. These tests did
not have the device installed in order to record and understand the basic performance of a shock wave coming straight from the shock tube. To
record the pressure profile of the wave within the expansion section, GageScope was used. A trigger was set to detect a rapid rise in voltage from
the pressure transducer, and the program would record 1ms before and 10ms after the trigger. The initial baseline test can be seen in Figure X below.
For a greater focus on the effects of the device on the shock wave, all charts for comparison has been narrowed to 2ms after the trigger. The two
significant runs showing the pressure profile of the shock wave are shown in Figures X & Y.
Figure x: Baseline Test 1 Full Recording
Figure x: Baseline Test 1 – 2ms Recording
Figure x: Baseline Test 2
These figures show that the pressure rises from atmospheric (0mV) to peak pressure in a rise time of around 0.000039 seconds, or 39 Вµs. This is
representative of a shock wave due to a nearly instantaneous rise time. Baseline test 1 burst at 51 psi while baseline test 2 burst at 53 psi.
The initial design did not perform effectively at achieving its intended functions when installed and tested with the shock tube. Upon firing the shock
tube, the slats would not rotate. Several firings were attempted, all resulting in no rotation of the rods. The

Watching Myself On Tape Analysis
Having the ability to watch myself on tape, analysis it so that you know how you have progressed and where you need to make changes to continue
to better yourself is all new to me. Though I was terrified to watch myself on tape before beginning mid terms I was actually relieved at what I saw.
Once I was able to get past the self–consciousness, I believe I was able to delve into evaluating the progress I had made and places where I could use
some extra attention.
The objectives that I plan on discussing within my paper are Core Stability, Rotation of the Femur and Squareness. Core Stability is the first object that
I am going to be talking about and how it effected my balance in coupe, pique turns and dГ©gagГ©. Core Stability muscles in the ... Show more content
on Helpwriting.net ...
During the course of the pliГ© sequence that we would do as a warm–up, it caught my eye that my pelvis is not square while moving through each
stance and that I need to be more mindful about whether or not my shoulders and pelvis are square. Squareness is having the capacity to control the
pelvis and shoulders during the course of traveling through a variety of planes. As I continue to work on this and continue to transition into more of the
"how I am physicalizing a movement" instead of the "what movement am I physicalizing?" I believe I can strengthen my ability of Squareness through
stances. When working through ronde de jambes I noticed that I would usually begin with a strong turn out and my feet planted but then as my foot
rotated either en de dans or en de or, my gesture leg would shift out of turn out as it traveled through the movement. I began this class thinking that I
knew a lot more than I actually did, and also knowing that I had so much to learn starting at ground zero. Being able to watch myself is something that
I have come to appreciate more than I thought I would in such a small amount of time. Through the usage of Core Stability, Rotation Turn out of the
Femur and Squareness I believe that I can begin to take the steps necessary to correct the errors seen in the video and continue to successfully

Atlas Shrugged Student Report
For proper development of bones and muscles, children need to spend at least 3 hours per day at 1.1g. To provide for the children's proper development
in the space settlement, we created the Taggart Youth Center, named after the Taggart Transcontinental Railroad from Ayn Rand's novel, Atlas
Shrugged. The Taggart Youth Center is a train
–like system that rotates around on the inside of the large part of the torus. This system works like a train
with the "cars" containing the schooling and recreational activities and the "tracks" running around the inside edge of the torus. The "tracks" are active
magnetic bearings powered by a permanent magnet motor, a type of bearing that supports a load through magnetic levitation. This technology rotates
with... Show more content on Helpwriting.net ...
The students have a traditional schedule where they go to seven classes a day on Tuesdays and Thursdays, where teachers teach through examples,
models, and projects. On the remaining days of the week, students do not have to go to class. They receive their classwork online, along with teachers'
notes, resources to learn, and a place for students to talk and interact about assignments. If students need help on these days, teachers are available in
their classrooms for extra assistance and students are welcome to come in anytime. This program teaches time management and allows students to have
more time to explore their passions. Students no longer have to spend the exact same amount of time in an easy class as a hard class. Students decide
for themselves what they need to spend time on. For students in the 11th–12th regular program, they go to classes every day with opportunities to have
2 unscheduled periods for extracurriculars, internships, jobs, or volunteering. Extracurricular and volunteering opportunities, as well as part–time jobs
for students, are available in the rotating area so students can still be at 1.1g for the necessary 3 hours per

Who Cares Anyway
Name: ______________________________________Date: ________________________
Student Exploration: Uniform Circular Motion
Vocabulary: acceleration, centripetal acceleration, centripetal force, Newton's first law, Newton's second law, uniform circular motion, vector, velocity
Prior Knowledge Questions (Do these BEFORE using the Gizmo.)
1. A boy is whirling a yo–yo above his head in a counter–clockwise direction. At the exact moment shown at left, he lets go of the string. In which
direction will the yo–yo travel? Draw an arrow on the image to show the yo–yo's direction.
2. Do you think the released yo–yo's path will be straight or curved? Explain. It will curve because the yo yo is spinning.
Gizmo Warm–up
The Uniform Circular ... Show more content on Helpwriting.net ...
How does this relate to the boy whirling a yo–yo given at the start of this Exploration sheet?
The boy whirling the yo yo has enough force so that even if he would have let go of the yo yo, then it would move in the same direction it was spinning.
6. Think and discuss: If you are sitting in the back seat of a car that makes a hard left turn, you will feel pushed toward the right side of the car. Why
does your body move to the right?
Centrifugal force moves the body away from the center of rotation.
Activity B: Centripetal acceleration| Get the Gizmo ready: * Click Reset. * Set the radius to 2.0 m, the mass to 1.0 kg, and the velocity to 10.0 m/s.| |
Introduction: The acceleration toward the center that keeps objects in uniform circular motion (circular motion at a constant speed) is called centripetal
acceleration. An understanding of centripetal acceleration was one of the key elements that led to Newton's formulation of the law of universal

gravitation.
Question: How is centripetal acceleration related to radius, mass, and velocity?
1. Record: Select the BAR CHART tab, select Acceleration from the dropdown menu, and turn on Show numerical values. The bar on the left shows
the magnitude of the acceleration, or |a|. The units of acceleration are meters per second per second, or m/s2.
What is the current magnitude of the acceleration?

Mental Rotation Of Images Essay
Abstract
The idea of mental imagery has always been a controversial subject in the field of psychology. Many psychologists have argued that such a concept is
impossible to measure because it can not be directly observed. Though they are right about this, it is not impossible to measure how quickly mental
rotations of images are processed in our brains. Subjects in this experiment were presented two shapes simultaneously, via computer screen, and asked
to make judgement, as quickly as possible, as to whether the two shapes presented were the same or mirror images. Two different shapes were used in
this experiment, each given as often as the other. During each trial one shape remained stationary and the other was rotated with varying ... Show more
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Of the 66 students 30 took part in the mental rotation condition and 30 in the manual rotation condition.
As expected, findings showed that there was in fact a strong relationship between the reaction times of the mental and manual rotations. As the angular
disparity of both the mental and manual rotations increased so did reaction times. In almost all cases manual and mental reaction times matched each
other. It was also observed by Wohlschlager & Wohlschlager (1998), that manual object rotation did not always follow the shortest path. Findings
showed that in some trials students rotated images the longer way around. Thus, it was concluded that mental processes also rotate things the long way
around, since reaction times did not differ much between the two groups, ultimately supporting their original hypothesis.
Desrocher, Smith & Taylor (1995) conducted a similar experiment with intentions of measuring reaction times. Only in this experiment the
independent variable was not mental vs. manual rotation, but gender. They were interested in seeing if gender differences played a role in regard to
reaction times, when presented with either a letter stimuli or picture stimuli. It has been noted that up to the present time, there have been no major
findings that show any significant difference in the way men and woman process letter images. In tests, both men and woman performed equally well
(Desrocher, smith &

The muscle, joints, movement components involved in the...
INTRODUCTION Soccer is the most popular sport worldwide. The Federation Internationale de Football Association represents 203 countries
including more than 200 million licensed participants. (9) The Union des Associations Europeennes de Football represents 49 European nations with
approximately 20 million participants, and the German Soccer Association listed 6.25 million participants in 2000. (6,28) These statistics do not
include players who play soccer on an unorganized basis. No other discrete movement in football is as spectacular as the gesture known as the bicycle
kick: when a player kicks the ball in mid–air backwards and over his own head. Many players have tried it; some of them have succeeded but few have
performed a perfect... Show more content on Helpwriting.net ...
The dorsiflexion of the ankle by the Tibialis anterior is inserted at the ankle, tarsal and metatarsal. 2. Describe the health and skill related components
of physical fitness that are relevant to the performance of this skill. Physical fitness is multifaceted and involves both skill–related and health–related
components. The skill–related components of fitness (speed, power, agility, balance, reaction time, and coordination) are primarily important in
achieving success in athletics and are not as crucial for the development of better health. Soccer players need a combination of aerobic and
anaerobic fitness due to the nature of the game and the fact that there is continuous movement with lots of short bursts of more intense activity.
Some positions require higher levels of anaerobic fitness than others, some require more aerobic fitness. A midfield player is required to cover a lot
of ground during a game and needs a good aerobic engine. A striker on the other hand requires short bursts of repeated activity and requires more
speed and anaerobic fitness. In order to perform the bicycle kick, there is a number of health and skill related components of physical fitness that are
relevant to its success. From Health related components, nearly all the components are relevant to the performance of the bicycle kick, however key
components are MUSCULAR STRENGTH –Muscular strength is the amount of force a muscle can

Females Mental Rotation Study
Background
One theory developed by psychologists working within the biological approach is the idea that males have better spatial ability than females. Spatial
ability is the ability to mentally manipulate 2–dimensional and 3–dimensional figures. One way in which spatial ability can be operationalised is in the
form of mental rotation test. A mental rotation test requires participants to identify rotated versions of a target stimulus. Mental rotation usually takes
place in the right cerebral hemisphere, in the areas where perception also occurs. Mental rotation can be separated into the following cognitive stages
(Johnson 1990): 1) Create a mental image of an object 2) Rotate the object mentally until a comparison can be made 3) Make the ... Show more content
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Controls in this experiment included ensuring that all participants undertook the task in silence. All participants took the test in the same school
computer lab and at the same time of day (Between 1:00 and 2:00pm). All participants were of a similar age and all participants did exactly the same
task. Participants were seated a desk apart so they could not copy each others answers.
Design
As there are two groups of different participants, one male and one female, to compare times between groups the research design is an independent
groups – each participants is only in one group (condition).
Procedure
A pilot study was conducted with 5 students not taking part in the study. This enabled the researchers to check the timings involved in administering
the mental rotation test and also to check that everything ran smoothly. The study also enabled the researchers to perfect the wording of the
standardised instructions.
For the main study 10 male participants sat at separate desks in the computer room with the mental rotation programme loaded. Participants read and
signed a consent form. The experimenter then read from a standardised set of instructions explaining the procedure and giving permission for
participants to begin the 10 mental rotation trails when they were ready. Sitting next to each participant was a research assistant on hand to time the
task. In their own time participants began the task – matching a 2D object with one of six

Increasing Mobility of Micro-robotics Essay
Chapter Two
The Review of the Related Literature
Introduction
Micro–robotics is a field that stresses mobility from being able to fit in tight spaces to being able to navigate varying terrain. Scientists and engineers
are often trying to make smaller and more mobile robots as seen in the 3cm long RoACH robot (Hoover, 2008), and the DASH (Birkmeyer, 2009) and
iSprawl (Kim, 2006) robots which can reach speeds of up to 15 body lengths a second. A common method to make robots smaller is to reduce the
amount of actuators a robot has to both reduce the size of the robot and the weight but this has a negative effect on the robots mobility. The smaller
robots become the less mobility they come to have and so in an effort to make robots more ... Show more content on Helpwriting.net ...
This project also deals with the use of inertial appendages in under actuated miniature robots. An inertial appendage in the form of a tail was added to
a robot to study the effects a tail would have on dynamic steering. Tails can contribute to steering through either a shift in the robots center of mass or
through the transfer of angular momentum. The goal of this study is to provide a model of a legged robot that successfully uses an inertial tail for
faster and sharper turns. Other factors that can affect the robots movement are also studied such as changing the tail's inertia, the friction between the
robot and the surface, and motor input voltage. There are also two types of tails that will be tested and compared, a symmetric tail with weights on
either side, and an asymmetric tail with half the length and a weight only on one side. The symmetric tail separates the effect of changing the robots
center of mass as the system is still balanced but the asymmetric tail changes the robots center of mass which may prove either detrimental or beneficial
to the robots mobility.
History of Inertial Appendages The idea of inertial appendages first stemmed from a proposal in 1969 by a paleontologist who said that theropod
dinosaurs had tails which acted as dynamic stabilizers during rapid or irregular movements. (Libby, 2012) This led to the discovery that other animals
such as lizards and cats have been known to use their tails to self–right their bodies in free fall.

Physics Of Angular Momentum Project
Kathleen Murphy
6/16/17
Walker
Physics of Angular Momentum Project
Angular Momentum: The Physics of Spinning
Although many know the physics of "spinning", not many people are aware of how angular momentum explains the physics of rotation. Now it is true
that all objects have a momentum, a product of mass and velocity. But similarly, the inertia of rotating objects is calledangular momentum. When a
direction is given to a rotational speed, we call this rotational velocity, and its vector is rotational speed. Therefore, angular momentum is the product of
rotational inertia and rotational velocity, or L=Iw. This equation can be used in physics to find the angular momentum of an extended object, with the I
being the inertia (kg x m2) the ... Show more content on Helpwriting.net ...
An example of this would be a man with his arms extended, holding weights. If his arms are extended with weights on the end, his overall rotational
inertia is relatively large and as he turns, his angular momentum is the product of his rotational inertia and rotational velocity. If he pulls the weights
in, his rotational inertia is decreased, but his rotational speed increases. This concedes the idea of the law, that the smaller one part is, the larger the
other part must be. There are examples in sports too, like cheerleading. When a flyer in cheerleading is thrown and is going into her rotation, she isn't at
her fastest motion yet, but her ability to resist a change in motion is quite high. This ability to resist a change in motion is her inertia, which in our
case, is mass multiplied by radius squared. So while she has arms and legs extended before she fully rotates, she has less speed, but a longer radius
that allows her inertia to remain larger. When she is fully into the rotation with legs and arms fully tucked in, she has a smaller radius, but because of
the conservation of momentum, this loss of inertia must be made up in speed. So while the flyer is doing the hardest part of her trick, the real
rotation, her body is moving the fastest so that her lack of inertia can not affect the success of her move.
Now my final example is the figure skater, how do we explain mathematically why when her arms are extended she goes slower and when her arms
are pulled in she

Mass Customisation And Its Effect On The Individual And...
Mass Customisation in Architecture
Introduction
Mass customisation implies a relationship between an individual and the production process.
For mass production to occur a process must be created which aims to fabricate a product in the easiest and the least redundant way. This process is
highly designed to create products which are virtually identical in mass quantities (Image 01.1). The final outcome caters to the product rather than to
the individual. A process, on the other hand, which allows for a product to be produced based on the needs and wants of the individual requires a link
to be created between the person and the system. (Image 01.2) For this relationship to exist, the individual must have a knowledge of the different ...
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The combination of these two factors are then forced upon the user, who will never consider the possibility of variation.
Extrusion moulding, additive fabrication and water jet cutting are the three production methods which this project will explore in the context of a joint
at an architecturally viable scale. In architecture, joinery exists in wood work and metal and is intended to create a connection between separate
elements. For example a lap joint in wood work or welding, or a metal t–plate are intend to be static joint details which can bring together multiple
elements. The ball and socket joint, however, is a joint type which does connect separate elements, but allows for movement among them. This can be
utilised to create structures which can withstand forces acting from various angles, or structures which can be dismantled, folded and transported. Thus
exploring the ball and socket joint which is a natural or manufactured joint or coupling in which a partially spherical end lies in a socket, allowing
multidirectional movement and rotation, will allow me to explore these fabrication methods to their greatest capabilities.
Extrusion Molding
Extrusion molding is recognized as a process of pushing a malleable material, sensitive to heat, through a plate with a predefined void. As the material
is pushed through the die, it takes on the shape of the void and therefor an object is created with a continuous cross

The Physics in Lacrosse
Lacrosse is a team sport that originated in the St. Lawrence Valley area, around 1546. It is played with a small rubber ball, a long stick with a sort
of basket at the end, and padding (it is a contact sport). The objective of the game is to shoot the ball into the other team's goal, using the stick to
pass, cradle and shoot. At first, the game was played on a distance of even several miles, and anywhere between 100 and 100000 players in a single
game. The teams are now composed of ten players each, 3 of them are offense, 3 defense, 3 midfielders, that can go anywhere on the field, and one
goalie, which is the heart of the team. In this essay I will focus on the physics that stand behind lacrosse, and how companies that make lacrosse gear
use our knowledge and understanding of forces to make padding and helmets that are safer, and sticks that are made for different kinds of play styles
(contact defense, precision, fast offense...).
Head of the Lacrosse Stick Field Lacrosse Head Box Lacrosse Head Native American Lacrosse Head
The design of a Lacrosse head impacts the game in a great way, because the pocket of the Lacrosse stick affects how the ball comes out of the stick.
During a shot the kinetic energy of the shaft is transferred into the head, which in turn stretches the mesh (elastic energy), and transfers it to the ball as
k. energy. The shooting strings in the mesh (the 3 big ones that look like shoe laces) turn the force the ball has and turns it into angular

Hooking A Bowling Ball: How To Hook A Bowling Ball
Is it true that you are a middle of the road bowler eager to take your game to the next level and yield better results? Alright, so as to expand your
capacities, you should figure out how to hook the ball. You may ask "What is a hook and why is it important?" Well, hooking the bowling ball is a
technique where the bowling ball turns from its path down the lane. When the hook procedure gets executed correctly, it allows the ball a better
angle of entry into your target, also identified as the pocket. When the ball enters the pocket at a different degree, as opposed to straight on, the ball
hits the pins with more force, causing better pin carry. There are a few steps you can exercise to improve your skills at hooking a bowling ball.
Although it can take rigorous hands–on training and lots of dedication to become proficient at getting the ball to hook, the fundamentals are not too
challenging to learn. First off, you need to get the proper grip on the ball. Take you middle and index fingers and place them in the two holes.
Remember that if your fingers are too deep in the holes can cause blistering. The ideal depth for your fingers is down to the firs crease. In other words,
just the finger tips. Using the tips of ... Show more content on Helpwriting.net ...
Like in many positions in sports the follow through is key to accuracy. Think of a golf swing or shooting a basketball for instance. In bowling, it's the
same case. An easy way to executing an effective follow through is to think of a handshake. Meaning, when you get to the release point turn your hand
as if you were shaking someone's hand. The exercises I mentioned earlier help with this conversion. Twisting your hand creates that roll and rotation
movement, resulting in ball revolutions. These revs will eventually catch on the dry part down lane causing your ball to change course and hook. It
may take performing this step several times but your follow through will come

The Physics of Riding Bulls Essay
The Physics of Riding Bulls
Rodeo is a sport that came about by everyday work being made into competition.
Every event in rodeo has a practical purpose; all but one that is. There is no practical reason to get on a bull; only the thrills, chills, and rush of
excitement. ItВЎВ¦s more than a challenge between riders. ItВЎВ¦s a challenge between man and beast. Legendary cowboy Larry Mahan had an even
different way of looking at it. He said, ВЎВ§ItВЎВ¦s not a challenge with the animal but with the weakness in oneВЎВ¦s selfВЎВЁ. At any rate,
itВЎВ¦s all about the challenge.
The challenge is simple; stay on the bullВЎВ¦s back for eight seconds while keeping one hand fee from contact with the bull or your own body. Well it
sounds simple anyways. ... Show more content on Helpwriting.net ...
This exerts a force in the opposite direction the bull is going. The force is the product of the bullВЎВ¦s mass and its acceleration. With a rider on the
bullВЎВ¦s back this force then becomes a combination of the bullВЎВ¦s mass plus the riderВЎВ¦s mass times the acceleration of both which is
attributed only by the bull. All the rider needs to do in this case is hold on tight. There may be some air resistance, but it is too small to notice. The
bull further complicates the ride by bucking (a combination of raring, kicking, and jumping). Each component of the buck is relatively simple. When
a bull rares, it creates a force pushing the rider backwards. When a bull kicks, it creates a force throwing the rider forwards. When the bull jumps, it
creates a force pushing the rider straight upwards. Each force is once again the product of how fast the bull changes positions (acceleration) and
itВЎВ¦s mass. In each of these situations the bullВЎВ¦s mass is combined with the riderВЎВ¦s. So, if the combined mass remains the same, all the
rider has to do to counter the force created by the bull is move in the opposite direction as the bull with and equal acceleration. Acceleration equals the
change in velocity divided by the change in time. The velocity is the change in position divided by the change in time. Both the bull and the rider can
accelerate instantaneously. Therefore the velocity is the only variable the rider needs to adjust to the counter the bullВЎВ¦s force. If the distance change

Biodoxics In Sports Biomechanics
When the human body moves during regular movement or during athletic performance, the movements can be scientifically broken down and analyzed
by biomechanics based on a number of different analytics. Some of the most common analytics being evaluated are power, torque, joint actions, linear
velocity, and angular velocity. A person in recovery from an injury or a professional athlete will often have their movements analyzed using the
previously mentioned criteria to determine improvement in performance. This assignment will explore the importance of those biomechanical topics
and how they are applied in sports biomechanics.
In order to begin defining the terms that are listed above, others topics need to be briefly introduced, as the human body and its movements are
extremely complex and interconnected. Work is the basis of all body movement, without work movement does not occur. In his 2013 textbook
Biomechanics of sport and exercise, P. McGinnis explains that "work is the product of force and the amount of displacement in the direction of that
force (it is the means by which energy is transferred from one object or system to another" (p. 116). Force is another basis for all of movement, both
living and not. P. McGinnis defines force as a push or a pull which is exerted by objects on other objects (McGinnis, 2013, p. 19). When exerting a
force on an object, the muscles in the human body contract which result in a "pull". The rate at which muscles contract determines the

Centripetal Acceleration Lab Report
Introduction: As objects move in a circular motion or change direction, they are accelerating, this form of acceleration is known as centripetal
acceleration (ac). The direction of the acceleration is always towards the centre of the circle. Centripetal acceleration can be represented by the
formula ac=V2r=42rT2=42rf2. In these formulas, v is the velocity, r is the radius of the circle, T is the period, and f is the frequency. Furthermore,
velocity can be represented by the following equations v=2rT=2rf. In order to calculate frequency, the free body diagram must be taken into
consideration in order to calculate the force of tension. In this lab, the force of tension and gravity are assumed to be the only forces. Furthermore, the ...
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As a result of this, the stopper will complete the necessary rotations in fewer seconds. Finally, in turn, this allows the frequency to increase as the radius
decreases, proving they are inversely proportional.
Finally, the frequency and the mass of the spinning object (rubber stopper) are inversely proportional to one another specifically that as the mass
increases, the frequency decreases.As the spinning mass's weight increases, it would take more force to rotate it causing it to slow down. These larger
time intervals would drastically decrease the frequency as the growing mass would result in a lower frequency.
Experimental Design: A hanging mass was connected to a string that passed through a hollow tube that had a rubber stopper connected to the string on
the other side of the tube. A person held the glass tube and spun the string above their head so the rubber stopper would spin and raise the hanging
mass at a constant radius from the hollow tube.
Independent Variables: Tension from the hanging mass, the radius, and the mass of the rubber stopper.
Dependent Variables: Frequency of the rotations
Controlled Variables: Gravity, and the apparatus
Procedure: Please refer to page 152 to 153 of Hirsch, Alan J. Nelson Physics 12. Toronto: Nelson Thomson Learning, 2003. Print. for the full procedure
With the following changes:
Step 3–4: Use a 50–g mass instead of a 200–g mass
Step 4: Use a 60 cm radius instead

Outline Of A Experiment On Balancing Machinery
Title of experiment: Balancing Machinery Author: Vishal Patel (a1712191) Practical Date: 9th September 2016 Table of Contents page no General
objectives 3 Introduction 3 Experiment setup 5 Procedure 7 Calculation 9 Discussion 11 Conclusion 13 References 13 Table of Figures Figure 1.0:
Mechanical vibration rotor kit 6

The Key Aspects Of Mechanics Essay
These tricks that the top level athletes perform all relate to the laws of physics, every trick has components of mechanics whether it be performed in a
half–pipe or just straight off the ground. The key aspects of mechanics that are essential for these tricks performed in a half–pipe include Torque,
Momentum, Centripetal force, Velocity, Acceleration; they also need to follow the laws of projectile motion, conservation of energy. All of these play
a role in helping the top athletes perform tricks and giving them the ability to rotate in the air at will and land safely.
The law of motion is Newton's first law of physics that relates to inertia. This law state that an object will remain at rest and an object in motion will
remain in motion (rotating, moving straight) unless acted upon by external forces. This and the law, conservation of momentum, explain how the
rotation occurs in the air. If you 're rotating, you 'll keep rotating unless a twisting force, or torque, acts to stop you. In other words if you 're not
rotating, you can 't rotate unless a torque starts you rotating. Both of these apply to when snowboarders and skateboarders are in the air doing tricks. In
relation to athletes it means that they will stay rotating and moving in an upward direction if it weren't for external forces such as gravity which helps
decelerate them at 9.8ms–2 until they reach a final velocity of 0ms–1 and other external forces such as air resistance/friction that help slow down the

The Characteristics Of The Lil Mynx 'Rotator' Colors
When it comes to dance poles for home use, the Lil' Mynx 'Rotator' Colors is considered a premium and sensible choice. This is highly recommended
for both professionals and amateur dancers, and can even work for women who just want to have fun at home. What makes the Rotator a hit among
buyers is the presence of a unique and fun feature– the rotating mode. You can activate the rotating mode to make the pole spin, or you can lock the
feature out, and just enjoy the pole in its static mode.
Top Rotator Features
–Comes in two diameter sizes, 45–mm and 50–mm
–Choose among 4 colors
–Passed stringent quality standards
This Rotator model from Lil' Mynx is a fun addition to any home, thanks to the availability of 4 colors. Two of the popular colors that you can order
are hot pink and red. To enable its rotation, the unit comes with its own bearing assembly. The base is also designed to support the rotating function
of this pole. Inside the base is another set of bearing assembly, allowing the pole to rotate in its place, which helps you pull off creative spins and
dance moves. If you want to switch to the static mode, you can easily adjust the locking mechanism. The dual mode of this dance pole makes this a
highly entertaining and flexible unit to be installed and used at home. Safety is assured when using this unit, thanks to the lock–out pin ... Show more
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The pole height is adjustable, depending on the room or venue's ceiling. Adjustment of height is made possible, thanks to the slider tube. Also, the
manufacturers ensure that you no longer have to bolt this Rotator on the ceiling, or on your floor. The addition of the black base is actually a support
for extra stability. This ensures that your Rotator will not slip when you use it. You can also use this Rotator in rooms with carpets, provided that you
will use a non–skidding pads which you can order as

The Bottom Of The Spiral
the bottom of the spiral. It was just a cool system that I had never thought of. I also got to try a passion fruit while I was there. I had never even
heard of them before. It was so good, and tasted like a bunch of tropical flavors mixed together. Best of all. It was grown in that garden. As a group we
helped Emilia with a couple projects in the garden. I helped make a path out of rocks. It ended up looking really good. It was really beneficial to see
a garden put together by college students, as it makes sustainable practices seem more feasible.
Week #10 (11/3) Flying FishFarm:
This farm was very interesting to me. The aquaponics were super cool, as that is always something I have been interested in. A teacher I had in
high school experimented with aquaponics, but it was on a much smaller scale. Her system was not as successful though, as she struggled with
some diseases. The owner of Flying Fish seemed much more successful. This is super cool to see new processes working for people. Another
unique aspect of his farm was that he did a lot of seedlings. That way he could sell the plants as a product. He said he sold his plants to places like
Earth Fare, which is very cool. Another unique thing was the popcorn that he grew. I have never had popcorn right from the cob, and I would like to
try it sometime after hearing the owner talk about it. A new thing that the owner was trying was chickens. He was talking a lot about growing his own
feed for them to make the feedback loop

Mental Rotation of Images
Abstract The idea of mental imagery has always been a controversial subject in the field of psychology. Many psychologists have argued that such a
concept is impossible to measure because it can not be directly observed. Though they are right about this, it is not impossible to measure how
quickly mental rotations of images are processed in our brains. Subjects in this experiment were presented two shapes simultaneously, via computer
screen, and asked to make judgement, as quickly as possible, as to whether the two shapes presented were the same or mirror images. Two different
shapes were used in this experiment, each given as often as the other. During each trial one shape remained stationary and the other was rotated with
varying... Show more content on Helpwriting.net ...
Overall, when comparing the reaction times of pictures to letters, picture reaction times are said to be generally greater. In conducting this experiment
20 right–handed subjects were used, 10 male and 10 female. Subjects participated in this study either to earn course credit, or for payment of ten dollars
per hour. Three things were concluded from this experiment. First, picture rotations took longer to perform than letter rotations. Second, there were no
sex differences in reaction times for either stimulus presented, and third, there was a linear increase in reaction times as angular disparity of both
stimuli sets increased (Desrocher, smith & Taylor, 1995). As predicted this study did replicate some previous findings. However, based on the data from
this experiment sex differences did not yield a significant difference in reaction times when presented with the different stimuli. Concurrent with our
data, both of the previously mentioned experiments concluded the same thing; reaction times increased as angular disparity increased. Although the
objectives in each experiment were somewhat different, there has been a sufficient amount of evidence to support the hypothesis, that reaction times
will increase as the angular disparity of objects increase. Method Participants Ten St. Johns University undergraduate students participated in this
experiment to fulfill their Research Method

Maranatha High School. . . . Final Draft: The Foucault
Maranatha High School
Final Draft: The Foucault Pendulum
Amanda Dundas (5)
Honors Algebra 2 (Group A)
Ms. Monica Chan
3 April 2017
Abstract
The Foucault Pendulum
I chose to do my project on the Foucault Pendulum because it seemed interesting and I had seen a model at the Griffith Observatory when I visited
there. I am also taking physics this year as well as chemistry and have learned a little bit about the Foucault Pendulum but I wanted to do more research
beyond that. What I found was very interesting. Leon Foucault invented the pendulum in 1851 which was first actual proof of the rotation of the earth.
In general, the direction of the plane of oscillation of a pendulum rotates with an angular ... Show more content on Helpwriting.net ...
The ratio between the time and where the pendulum is confuses people the most. People found the sine factor to be confusing so Foucault made the
gyroscope in 1852 to try and help them understand the concept of time with the pendulum. The gyroscope's spinning rotor tracks the stars directly. Its
axis of rotation turns once per day whatever the latitude, unaffected by the sine factor.
This great invention had to have a lot of thought put into it because precautions must be made to assure that the pendulum is not acted upon by any
outside forces besides gravity. Constructing a mini pendulum for an experiment is very hard to do because of the precise measurements that must be
made to ensure the ratios are correct and that it will swing where it is supposed to swing. For example, to start the pendulum moving, it is usually held
at an angle by a string, and then burned to release the pendulum. Letting go from one 's hands, or cutting the string, could give the pendulum
momentum that is not right in a particular direction creating a variable and inaccurate results. A heavy pendulum on a long, rigid wire will continue
going for long periods of time, but air resistance will eventually cause the motion to lessen and stop. Museums usually use an electromagnetic drive to
keep the pendulum moving. This provides additional energy to the pendulum but doesn't affect its direction of motion.
All pendulums consist of a cable and a symmetrical weight at

Trifilar Suspension

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