Angling for Access, with examples 2013
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This document appears to be a student worksheet for a science lab experiment investigating how the angle of inclination of a ramp affects the force required to move an object up the ramp. The student is provided with materials needed, procedures to collect data, and questions to analyze the results. The experiment involves measuring the force needed to pull a roller up ramps at various angles and calculating actual and ideal mechanical advantage. The student is asked to recommend the best angle for a wheelchair ramp based on the results.
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Most of the contents came from other presentations I found here on slideshare.. Hope it help someone.. :)
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ECGS Module 4B
This document discusses the six types of simple machines: inclined plane, wedge, lever, pulley, wheel and axle, and screw. It provides definitions and examples of each machine, as well as explaining how to calculate their mechanical advantages. The key functions of simple machines are to make work easier by magnifying or changing the direction and amount of applied force.
2016_1100_BASIC MACHINES = intro-Lever-screw -wedge-MA (1).ppt
- The document discusses topics related to mechanical design and simple machines including levers, linkages, wedges, and mechanical advantage. It provides an overview of the class topics and assignments.
- Students will create a kinematic model of their robot design and write necessary data on torques, angles, and arm lengths. They will also consider how the simple machine concepts can apply to practical robot designs.
- The class covers various stages of robot design from mechanical design to programming and system integration. Students' projects should apply some of these design principles.
Hooke's law and Moments
The document discusses Hooke's law and moments in physics. It explains that Hooke's law states that the extension of an object is proportional to the applied load as long as the elastic limit is not exceeded. It also defines the terms elasticity, plasticity, extension, and elastic limit. Additionally, it covers the turning effect of forces, or moments, and defines key terms related to moments like pivot, moment equation, and principle of moments.
Velocity ok
1. The document discusses various concepts related to one-dimensional motion including position, distance, displacement, speed, velocity, and acceleration.
2. It defines key terms like displacement as the change in position of an object, velocity as a vector quantity that includes both speed and direction, and acceleration as the rate of change of velocity with respect to time.
3. Examples and equations are provided to calculate quantities like average speed, average velocity, and instantaneous velocity from distance-time graphs or data tables.
Les 2 motion_11
This document discusses speed, velocity, and projectile motion. It defines speed as the distance moved per second and velocity as measuring the rate of change of displacement, including that speed is a scalar quantity while velocity is a vector quantity. It also explains that a projectile is an object only affected by gravity, causing it to accelerate downward while maintaining its original horizontal velocity, and that the motion of projectiles can be described by resolving the forces into horizontal and vertical components.
6.3_AccelerationInclinedPlanes.pdf.com.ph
The document discusses motion on inclined planes and how acceleration is related to the angle of the plane. It provides examples of calculating acceleration using the height and length of a ramp. A key point is that acceleration increases as the ramp angle increases because the force of gravity has a greater downward component along the ramp. Free-body diagrams and a tilted coordinate system are used to explain this relationship between ramp angle and acceleration.
6.3 lever class 8.pptx
Here are the solutions to the numerical problems:
1. i) Effort = 500/1.25 = 400N
ii) MA = 1.25
iii) VR = 1.25
iv) Efficiency = 100%
2. i) MA = 5
ii) VR = 4
iii) Efficiency = 80%
3. Effort = 1200 * 60/25 = 2880N
4. Efficiency = (400/600) * (40/20) * 100% = 80%
Uniform Circular Motion
This document discusses the concepts of uniform circular motion including:
- Speed is constant in magnitude but changing in direction along the circular path.
- Centripetal acceleration is directed radially inward and causes a change in direction.
- Centripetal force provides the inward force necessary for circular motion and can be supplied by tension, gravity, or friction.
- When an object in circular motion is released, it will travel in a straight line tangent to the path rather than along the circular arc.
Chapter3physics
This document provides an introduction to vectors and projectile motion. It discusses key concepts such as:
- Vectors have both magnitude and direction, while scalars only have magnitude.
- Vectors can be added graphically using the head-to-tail method.
- Projectile motion can be analyzed by breaking vectors into horizontal and vertical components, with gravity only affecting the vertical component.
- Examples are provided for calculating vector and projectile motion quantities such as displacement, velocity, time, and maximum height.
Force- final.ppt
Here are the steps to re-arrange the surfaces by slipperiness:
1. Ice
2. Wet Mud
3. Wet Grass
4. Thick Carpet
5. Wet concrete
6. Dry concrete
2. a. An ice skater performing a routine wants as little friction as possible.
b. A driver driving a car on a wet road wants as much friction as possible.
c. A mountain biker riding down a steep muddy hill wants as little friction as possible.
Simple Machines
This document summarizes the basic principles of six simple machines: the inclined plane, wedge, screw, lever, wheel and axle, and pulley. It defines each machine, describes how they work mechanically to make work easier by changing either the size or direction of force needed, and provides examples of common uses. The summary concludes by reviewing key concepts like work, power, pressure, and Newton's Laws of Motion.
Work And Simple Machines
Work is defined as a force applied to an object, moving it a distance. Simple machines like levers, pulleys, and inclined planes make work easier by multiplying applied forces or distances moved. They provide mechanical advantages but also lose efficiency due to friction. Common simple machines are described along with their applications, mechanical advantages, and efficiency considerations.
Similar to Angling for Access, with examples 2013 (20)
2016_1100_BASIC MACHINES = intro-Lever-screw -wedge-MA (1).ppt
2016_1100_BASIC MACHINES = intro-Lever-screw -wedge-MA (1).ppt
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Science equipment 2014 2015
This document provides information about various pieces of science equipment, including their names, purposes, and any relevant units of measurement. It describes common lab tools such as beakers, flasks, slides, meters sticks, thermometers, balances, pipettes, funnels, petri dishes, Bunsen burners, mortars, pestles, test tubes, and more. For each item, it indicates its typical use, any associated drawings, and if applicable, the relevant units used to measure or describe the tool.
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Force & motion notes 2014 2015
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2014 Final Exam Review Slides
This document provides definitions for various biology terms related to genetics, cells, evolution, and body systems. It defines key concepts such as adaptation, alleles, asexual reproduction, chromosomes, DNA, dominant and recessive traits, and Mendel's accomplishments. It also outlines the steps of natural selection and differences between sexual and asexual reproduction. Various body systems are defined, including circulatory, digestive, endocrine, nervous, respiratory, and skeletal systems. Genetic concepts like genotype, phenotype, and Punnett squares are also summarized.
2014 Genes and Heredity
This document summarizes key concepts in genetics and heredity. It discusses Gregor Mendel's experiments with pea plants that revealed the laws of inheritance. Mendel discovered that traits are passed from parents to offspring through discrete units called genes located on chromosomes. Genes come in different forms called alleles that can be dominant or recessive. A Punnett square can be used to predict the possible combinations of alleles and the traits that may be expressed. Sexual reproduction involves two parents and produces offspring with a mix of parental traits, while asexual reproduction requires only one parent and produces identical offspring. Charles Darwin's theory of natural selection explains how organisms with traits better suited to their environment are more likely to survive and reproduce, passing on
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Frog Diagrams
This document provides an anatomical diagram of the external features and internal organs of an animal. The diagram labels various external structures of the head like the eyes, nares, tympanic membrane, teeth, and tongue. Internally, it identifies the heart, lungs, stomach, pancreas, spleen, intestines, liver, bladder, and other digestive system organs.
Human Body Systems Test Review
This document provides a review of various human body systems, including the integumentary, respiratory, circulatory, muscular, skeletal, digestive, endocrine, nervous, and excretory systems. It lists the key parts and functions of each system and explains how some systems work together, such as the respiratory and circulatory systems in gas exchange and the circulatory and excretory systems in waste removal. Key terms related to anatomy and physiology are also defined.
The Digestive System 2014
The document summarizes the key stages and components of human digestion. It describes the digestive system as beginning with ingestion in the mouth, followed by digestion in the stomach aided by gastric juices. Nutrients are further broken down by enzymes from the pancreas, liver and gallbladder in the small intestine where most absorption occurs. Undigested material then passes to the large intestine where water is reabsorbed before waste is excreted.
Organic Compounds
This document provides information about organic compounds and their components. It defines organic compounds as those containing carbon bonded to itself, hydrogen, and other elements like oxygen, nitrogen, phosphorus or sulfur. Examples of organic compounds that make up living things are described, including carbohydrates, lipids, proteins, and nucleic acids. These compounds are composed of combinations of the elements carbon, hydrogen, oxygen, nitrogen, phosphorus and sometimes sulfur. The document emphasizes carbon's unique ability to form many diverse molecules by bonding to itself and other elements.
The Digestive System
The document summarizes key aspects of human digestion. It begins with an overview of nutrition and the two main parts - ingestion and digestion. It then describes the major components of the human digestive system from mouth to anus. Key functions and processes at each stage are highlighted, including mechanical and chemical breakdown of food. Absorption of nutrients primarily occurs in the small intestine. Undigested material then passes to the large intestine where water is absorbed before waste is excreted.
Exp design water notes 2014
Scientific research and discoveries have significantly improved modern life. Key scientists like Copernicus, Newton, Curie, and Pasteur made contributions that changed our understanding of physics, chemistry, and medicine. Without scientific advances, we would lack many modern technologies and medical treatments. Proper water filtration is also important, as unsafe water can spread disease. Filters work by using porous materials to remove particles from water through permeability and percolation. Understanding water's physical properties helps design effective filtration systems.
8th geology jeopardy
The document provides information about Earth's interior layers, plate tectonics, geological time, fossils, and geological maps. It does this through a series of multiple choice questions and explanations about these topics. Key points covered include the order of Earth's layers from center to surface, properties of the mantle and core, types of plate boundaries and associated landforms, principles of geological time such as superposition, types of fossils and what they reveal, and interpreting topographical maps.
2013 respiratory system pdf
The respiratory system brings oxygen into the body and removes carbon dioxide through a series of organs including the nose, pharynx, larynx, trachea, bronchi, bronchioles and alveoli. Air enters the nose and mouth, and is transported through the respiratory tract to the alveoli where gas exchange occurs through diffusion. The diaphragm and rib muscles work together to inhale and exhale air during breathing.
circulatory system
The circulatory system consists of the heart and blood vessels that circulate blood throughout the body. The heart pumps blood through a network of arteries, capillaries and veins. Arteries carry oxygenated blood away from the heart while veins carry deoxygenated blood back to the heart. Capillaries connect arteries and veins and allow for the exchange of oxygen, carbon dioxide and other materials between the blood and tissues. The circulatory system circulates blood an average of once per minute to deliver oxygen and nutrients to tissues and remove carbon dioxide and waste.
How Does Your Heart Rate?
This document provides instructions on how to measure heart rate by checking one's pulse and counting beats over 10 seconds. It includes a table to record heart rate data from sitting, walking in place, jumping jacks, and chair steps. Students are asked to graph their results and answer questions analyzing their data and comparisons to others in their group. They are to draw conclusions about how heart rate increases with exercise and varies between individuals.
Staar warm ups 3
Charles Darwin observed that finches on the Galapagos Islands had differently shaped bills adapted for particular foods, helping him formulate his theory of natural selection. The nucleus of a daisy cell controls the color of its petals. An object discovered in space with high luminosity and temperature is classified as a supergiant star.
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Angling for Access, with examples 2013
- 1. Name: ____________ Date: _________________ Teacher: ________________ ______Period Angling for Access Problem: How does the incline (angle) of a a ramp affect the force it takes to move an object up a ramp? Independent Variable: the incline (angle) of a a ramp Dependent Variable: the force it takes to move an object up a ramp Choose one! Hypothesis: If the incline (angle) of a a ramp is (steep or less steep) , then it will take (more force or less force) to move an object up a ramp. Choose one! Materials: • roller Length of Incline • ramp • spring scale • meter stick and ruler Angle of Incline Height of Incline Procedure: 1. 2. 3. 4. 5. Find the output force (weight of the roller). Use Newtons. Set the ramp to the correct angle of inclination. Measure the height of the incline and the length of the incline. Attach the roller to the spring scale. Pull the roller up the inclined plane using the spring scale. The spring scale must be parallel to the inclined plane. Measure the force it takes for the roller to be pulled up to the point the inclined plane crosses the protractor. Data Table: Angle of Inclination Length of Incline (cm) Height of Incline (cm) Input Force (N) (needed to pull the roller up ramp) Output Force (N) (weight of roller) Ideal Mechanical Advantage Length of Incline Height of Incline Actual Mechanical Advantage Output force Input force 15° 42 cm 10.5 cm .5 N 2.1 N Ex. 42 ÷ 10.5 = Ex. 2.1 ÷ .5 = 25° 38 cm 16 cm .9 N 2.1 N 40° 41 cm 26 cm 1.4 N 2.1 N
- 2. Analyze and Conclude: 1. What is the difference between ideal mechanical advantage and actual mechanical advantage? Should have been completed in class! 2. What happens to the ideal mechanical advantage as the incline becomes steeper? 3. How did the ideal mechanical advantage and actual mechanical advantage compare each time you repeated the experiment? 4. If Work = Force x Distance and the height of the incline is 10 cm, does the angle of incline of the ramp affect the amount of work needed to move the roller up the ramp? Distance Angle of Inclination Height of Incline (cm) 15° 10 cm 39 cm .5 N 25° 10 cm 10 cm The unit for WORK is JOULES (J). 24 cm .9 N 40° 5. Length of Incline (cm) Input Force (N) (needed to pull the roller up ramp) 16 cm 1.4 N W=FxD Ex. Work = .5N × 39 cm Explain your answer in complete sentences. _______________________ __________________________________________________________ __________________________________________________________ __ 6. Think about a wheelchair ramp. If we were building a wheelchair ramp at our school, which of these three ramps would you recommend building and why? __________________________________________________________
- 3. Name: ____________ Date: _________________ Teacher: ________________ Using the results of the lab, Angling for Access, apply what you have learned to the following question. Why are wheelchair ramps a longer distance than the stairs? Are architects just being thoughtless when they design long, winding wheelchair ramps? Explain your answer in a paragraph using complete thoughts and sentences. ______Period