This document summarizes a physics lecture on Newton's laws of motion. It introduces Newton's three laws, including his first law on inertia and uniform motion, his second law relating force, mass and acceleration, and his third law on action-reaction pairs. It also discusses key concepts like force, mass, gravity, friction, tension and equilibrium. Examples are provided to illustrate applying Newton's laws to solve mechanics problems involving accelerating or stationary objects.
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Newton's Laws of Motion
Class 11th Physics
Art Integrated learning project
laws of motion ppt
PowerPoint presentation
Force and Mass;
Types of Forces;
Contact forces;
Field forces;
Newtons laws of motion;
Sample Examples;
Explanation;
It’s not Newton’s Laws;
Its Rishi Kanad laws;
Proof of stolen three laws of motion;
Subscribe for more: https://www.youtube.com/channel/UCAoKcsoRqqeY8crXc_a0RBw
Newton's Laws of Motion
Class 11th Physics
Art Integrated learning project
laws of motion ppt
PowerPoint presentation
Force and Mass;
Types of Forces;
Contact forces;
Field forces;
Newtons laws of motion;
Sample Examples;
Explanation;
It’s not Newton’s Laws;
Its Rishi Kanad laws;
Proof of stolen three laws of motion;
Newton's 1st and 2nd law of motion mn matsuma.Nelson Matsuma
Newton's laws of motion discusses relations between the forces acting on a body and the motion of the body.
Attached is the slides on Newton's first and second law of motion, created by MN Matsuma.
FOCUS POINTS:
Explain how balanced and unbalanced forces are related to motion.
Describe friction and identify the factors that determine the friction force between two surfaces.
This is a re-purposed presentation, the information provided was taken from the works of the people who are acknowledged in the last slide of this presentation about the Newtons Law of Motions...Enjoy!!!
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Newton's 1st and 2nd law of motion mn matsuma.Nelson Matsuma
Newton's laws of motion discusses relations between the forces acting on a body and the motion of the body.
Attached is the slides on Newton's first and second law of motion, created by MN Matsuma.
FOCUS POINTS:
Explain how balanced and unbalanced forces are related to motion.
Describe friction and identify the factors that determine the friction force between two surfaces.
This is a re-purposed presentation, the information provided was taken from the works of the people who are acknowledged in the last slide of this presentation about the Newtons Law of Motions...Enjoy!!!
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Normal Labour/ Stages of Labour/ Mechanism of LabourWasim Ak
Normal labor is also termed spontaneous labor, defined as the natural physiological process through which the fetus, placenta, and membranes are expelled from the uterus through the birth canal at term (37 to 42 weeks
Acetabularia Information For Class 9 .docxvaibhavrinwa19
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
A workshop hosted by the South African Journal of Science aimed at postgraduate students and early career researchers with little or no experience in writing and publishing journal articles.
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2. Feb. 11-15, 2013
The Laws of Motion
Newton’s first law
Force
Mass
Newton’s second law
Newton’s third law
Examples
Isaac Newton’s work represents one of the greatest
contributions to science ever made by an individual.
3. Feb. 11-15, 2013
Dynamics
Describes the relationship between the motion
of objects in our everyday world and the forces
acting on them
Language of Dynamics
Force: The measure of interaction between two
objects (pull or push). It is a vector quantity – it has a
magnitude and direction
Mass: The measure of how difficult it is to change
object’s velocity (sluggishness or inertia of the object)
4. Feb. 11-15, 2013
Forces
The measure of interaction
between two objects (pull or
push)
Vector quantity: has
magnitude and direction
May be a contact force or a
field force
Contact forces result from
physical contact between two
objects
Field forces act between
disconnected objects
Also called “action at a distance”
5. Feb. 11-15, 2013
Forces
Gravitational Force
Archimedes Force
Friction Force
Tension Force
Spring Force
Normal Force
6. Feb. 11-15, 2013
Vector Nature of Force
Vector force: has magnitude and direction
Net Force: a resultant force acting on object
You must use the rules of vector addition to
obtain the net force on an object
......
3
2
1
F
F
F
F
Fnet
2 2
1 2
1 1
2
| | 2.24 N
tan ( ) 26.6
F F F
F
F
7. Feb. 11-15, 2013
Newton’s First Law
An object at rest tends to stay at rest and an
object in motion tends to stay in motion with
the same speed and in the same direction
unless acted upon by an unbalanced force
An object at rest remains at rest as long as no net force acts on it
An object moving with constant velocity continues to move with
the same speed and in the same direction (the same velocity) as
long as no net force acts on it
“Keep on doing what it is doing”
8. Feb. 11-15, 2013
Newton’s First Law
An object at rest tends to stay at rest and an
object in motion tends to stay in motion with
the same speed and in the same direction
unless acted upon by an unbalanced force
When forces are balanced, the acceleration of the object is zero
Object at rest: v = 0 and a = 0
Object in motion: v 0 and a = 0
The net force is defined as the vector sum of all the external forces
exerted on the object. If the net force is zero, forces are balanced.
When forces are balances, the object can be stationary, or move
with constant velocity.
9. Feb. 11-15, 2013
Mass and Inertia
Every object continues in its state of rest, or uniform
motion in a straight line, unless it is compelled to change
that state by unbalanced forces impressed upon it
Inertia is a property of objects
to resist changes is motion!
Mass is a measure of the
amount of inertia.
Mass is a measure of the resistance of an object to
changes in its velocity
Mass is an inherent property of an object
Scalar quantity and SI unit: kg
10. Feb. 11-15, 2013
Newton’s Second Law
The acceleration of an object is directly
proportional to the net force acting on
it and inversely proportional to its mass
m
F
m
F
a net
a
m
F
Fnet
11. Feb. 11-15, 2013
Newton’s second law:
SI unit of force is a Newton (N)
US Customary unit of force is a pound (lb)
1 N = 0.225 lb
Weight, also measured in lbs. is a force (mass x
acceleration). What is the acceleration in that case?
Units of Force
2
s
m
kg
1
N
1
a
m
F
Fnet
12. Feb. 11-15, 2013
More about Newton’s 2nd Law
You must be certain about which body we are
applying it to
Fnet must be the vector sum of all the forces that act
on that body
Only forces that act on that body are to be included
in the vector sum
Net force component along an
axis gives rise to the acceleration
along that same axis
x
x
net ma
F
, y
y
net ma
F
,
13. Feb. 11-15, 2013
Sample Problem
One or two forces act on a puck that moves over frictionless ice
along an x axis, in one-dimensional motion. The puck's mass is m =
0.20 kg. Forces F1 and F2 and are directed along the x axis and
have magnitudes F1 = 4.0 N and F2 = 2.0 N. Force F3 is directed at
angle = 30° and has magnitude F3 = 1.0 N. In each situation, what
is the acceleration of the puck?
x
x
net ma
F
,
2
1
1
m/s
20
kg
2
.
0
N
0
.
4
)
m
F
a
ma
F
a
x
x
2
2
1
2
1
m/s
10
kg
2
.
0
N
0
.
2
N
0
.
4
)
m
F
F
a
ma
F
F
b
x
x
2
2
3
3
,
3
2
,
3
m/s
7
.
5
kg
2
.
0
N
0
.
2
30
cos
N
0
.
1
cos
cos
)
m
F
F
a
F
F
ma
F
F
c
x
x
x
x
14. Feb. 11-15, 2013
Gravitational Force
Gravitational force is a vector
Expressed by Newton’s Law of Universal
Gravitation:
G – gravitational constant
M – mass of the Earth
m – mass of an object
R – radius of the Earth
Direction: pointing downward
2
R
mM
G
Fg
15. Feb. 11-15, 2013
The magnitude of the gravitational force acting on an
object of mass m near the Earth’s surface is called the
weight w of the object: w = mg
g can also be found from the Law of Universal Gravitation
Weight has a unit of N
Weight depends upon location
Weight
mg
F
w g
R = 6,400 km
2
2
m/s
8
.
9
R
M
G
g
2
R
mM
G
Fg
16. Feb. 11-15, 2013
Normal Force
Force from a solid
surface which keeps
object from falling
through
Direction: always
perpendicular to the
surface
Magnitude: depends
on situation
mg
F
w g
y
g ma
F
N
mg
N
y
ma
mg
N
17. Feb. 11-15, 2013
Tension Force: T
A taut rope exerts forces
on whatever holds its
ends
Direction: always along
the cord (rope, cable,
string ……) and away
from the object
Magnitude: depend on
situation
T1
T2
T1 = T = T2
18. Feb. 11-15, 2013
Newton’s Third Law
If object 1 and object 2 interact, the force
exerted by object 1 on object 2 is equal in
magnitude but opposite in direction to the
force exerted by object 2 on object 1
Equivalent to saying a single isolated force cannot exist
B
on
A
on F
F
19. Feb. 11-15, 2013
Newton’s Third Law cont.
F12 may be called the
action force and F21 the
reaction force
Actually, either force can
be the action or the
reaction force
The action and reaction
forces act on different
objects
20. Feb. 11-15, 2013
Some Action-Reaction Pairs
2
R
mM
G
Fg
2
R
mM
G
Fg
2
R
Gm
M
Ma
Fg
2
R
GM
m
mg
Fg
21. Feb. 11-15, 2013
Free Body Diagram
The most important step in
solving problems involving
Newton’s Laws is to draw the
free body diagram
Be sure to include only the
forces acting on the object of
interest
Include any field forces acting
on the object
Do not assume the normal
force equals the weight
F hand on book
F Earth on book
22. Feb. 11-15, 2013
Hints for Problem-Solving
Read the problem carefully at least once
Draw a picture of the system, identify the object of primary interest,
and indicate forces with arrows
Label each force in the picture in a way that will bring to mind what
physical quantity the label stands for (e.g., T for tension)
Draw a free-body diagram of the object of interest, based on the
labeled picture. If additional objects are involved, draw separate
free-body diagram for them
Choose a convenient coordinate system for each object
Apply Newton’s second law. The x- and y-components of Newton
second law should be taken from the vector equation and written
individually. This often results in two equations and two unknowns
Solve for the desired unknown quantity, and substitute the numbers
x
x
net ma
F
, y
y
net ma
F
,
23. Feb. 11-15, 2013
Objects in Equilibrium
Objects that are either at rest or moving with
constant velocity are said to be in equilibrium
Acceleration of an object can be modeled as
zero:
Mathematically, the net force acting on the
object is zero
Equivalent to the set of component equations
given by
0
F
0
a
0
x
F 0
y
F
24. Feb. 11-15, 2013
Equilibrium, Example 1
A lamp is suspended from a
chain of negligible mass
The forces acting on the
lamp are
the downward force of gravity
the upward tension in the
chain
Applying equilibrium gives
0 0
y g g
F T F T F
25. Feb. 11-15, 2013
Equilibrium, Example 2
A traffic light weighing 100 N hangs from a vertical cable
tied to two other cables that are fastened to a support.
The upper cables make angles of 37° and 53° with the
horizontal. Find the tension in each of the three cables.
Conceptualize the traffic light
Assume cables don’t break
Nothing is moving
Categorize as an equilibrium problem
No movement, so acceleration is zero
Model as an object in equilibrium
0
x
F 0
y
F
26. Feb. 11-15, 2013
Equilibrium, Example 2
Need 2 free-body diagrams
Apply equilibrium equation to light
Apply equilibrium equations to knot
N
F
T
F
T
F
g
g
y
100
0
0
3
3
N
F
T
F
T
F
g
g
y
100
0
0
3
3
N
T
T
N
T
T
T
T
N
T
T
T
T
T
F
T
T
T
T
F
y
y
y
y
x
x
x
80
33
.
1
60
33
.
1
53
cos
37
cos
0
100
53
sin
37
sin
0
53
cos
37
cos
1
2
1
1
1
2
2
1
3
2
1
2
1
2
1
27. Feb. 11-15, 2013
Accelerating Objects
If an object that can be modeled as a particle
experiences an acceleration, there must be a
nonzero net force acting on it
Draw a free-body diagram
Apply Newton’s Second Law in component form
a
m
F
x
x ma
F
y
y ma
F
28. Feb. 11-15, 2013
Accelerating Objects, Example 1
A man weighs himself with a scale in an elevator. While
the elevator is at rest, he measures a weight of 800 N.
What weight does the scale read if the elevator accelerates
upward at 2.0 m/s2? a = 2.0 m/s2
What weight does the scale read if the elevator accelerates
downward at 2.0 m/s2? a = - 2.0 m/s2
Upward:
Downward:
ma
mg
N
Fy
mg
N
N
80
m/s
8
.
9
N
800
)
(
2
g
w
m
a
g
m
ma
mg
N
mg
N
N
624
)
8
.
9
0
.
2
(
80
N
mg
N mg
N
N
624
)
8
.
9
0
.
2
(
80
N