This document discusses Newton's laws of motion and concepts related to forces and motion, including inertia, momentum, friction, and more. Newton's first law states that an object remains at rest or in uniform motion unless acted on by an external force. The second law establishes the relationship between force, mass, and acceleration. The third law states that for every action there is an equal and opposite reaction. Friction is also examined, along with its causes and types. Coefficients of friction and angles of repose are defined.
This Document contains basic knowledge about Newtons Laws Of Motion with its application in real world.
It Also contains some of the examples and its working.
This Document contains basic knowledge about Newtons Laws Of Motion with its application in real world.
It Also contains some of the examples and its working.
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.
Here is an informative ppt on the topic - Newton's Laws Of Motion
Hope this PPT helps you!
If you find this PPT helpful, please do Like, Share, and Comment
Your every like means a lot ^_^
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.
Here is an informative ppt on the topic - Newton's Laws Of Motion
Hope this PPT helps you!
If you find this PPT helpful, please do Like, Share, and Comment
Your every like means a lot ^_^
How can you use the Puzzle Maker in Portal 2 to teach students about Newton's 2nd Law of Motion? This presentation was created by students at Sammamish High School.
The Presentation is about the fundamental physical quantity Mass.
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Week 2 OverviewLast week, we studied the relationship between .docxmelbruce90096
Week 2 Overview
Last week, we studied the relationship between acceleration, velocity, displacement, and time. Acceleration in an object is caused by the force acting on it. This week, we'll study the relationship between force and acceleration. Central to this study are the laws of motion that Isaac Newton discovered in the 17th century.
You must have observed in daily life that when you apply brakes to a car, it takes some time before the car stops completely. The speed with which a train moves depends on the amount of force applied by the engine. A ball thrown at a wall bounces back. Newton's laws help you understand the motion of day-to-day objects and explain all this phenomena. These laws can also help you create realistic graphic animations!
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Newton’s First Law
What are Forces?
Forces are the result of the interaction between bodies. In simple words, a force is the push or pull acting on an object. For example, you exert a force on a rope to pull an object, and the rope pulls the object.
Here, we need a transition between the definition of forces and Newton’s Laws. We also need a couple of examples of how to draw a force diagram.
The Law of Inertia
Newton's first law of motion explains the relation between the force applied on an object and its motion.
The law states that:
An object continues to remain in a state of rest or of uniform motion in a straight line unless compelled by an external force to act otherwise.
This means that an object prefers to remain in a state of rest or uniform motion; in order to change the state it's in you need to apply force to it. Further, an object will always resist the force applied to it. The property of an object to resist an external force is called inertia, and for this reason, Newton's first law is called the law of inertia.
If you slide an object on a smooth floor with a given speed, the distance it moves depends upon the friction between the object and the floor. The smoother the floor, the greater the distance traveled by the object. The object eventually stops because of the external force of friction.
A force is required to change the velocity of a body. To understand this statement first recall from your study of kinematics that velocity is a vector with a magnitude (speed) and a direction. In the absence of a force, both speed and direction are constant. When a force acts on an object, it changes the speed, direction, or both of the objects.
There is no basic difference between an object at rest and an object in uniform motion; rest and uniform motion are relative terms. An object at rest with respec.
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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.
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2. 1. Force
2. Newton’s 1st law of Motion
3. Inertia
4. Types of Inertia
5. Momentum
6. Newton’s 2nd law of Motion
7. Impulse
8. Newton’s 3rd law of Motion
9. Law of Conservation of Momentum
10. Applications of Newton laws of Motion
3. 11. Friction – A necessary evil
12. Cause of Friction
13. Types of Friction
14. Laws of Limiting Friction
15. Coefficient of Friction
16. Angle of Friction & Angle of Repose
17. Advantages & Disadvantages of Friction
4. Force :
It is an external agency which
changes or tends to change the
state of motion or direction of its
motion or the shape of an object is
known as force.
In layman’s term it is also known as
push or pull applied on an object.
5. *Acc. to newton’s 1st law of motion, an
object continues to be in its state of rest
or state of motion along a straight line
until and unless an external unbalanced
force is applied to it.
*It is also known as law of inertia.
*It also defines force
6. INERTIA
It is that inherent property of a
material body by the virtue of which it
resists any change in its state of rest or
of uniform motion along a straight
line.
7. Types of inerTia
1. Inertia Of Rest: An Object Tends To Be In
State Of Rest Until & Unless An External &
Unbalanced Force Is Acted Upon It.
2. Inertia Of Motion: It Is That Inherent Property
Of A Material By Virtue Of Which It Resists
Any Change In Its State Of Motion.
3. Inertia Of Direction: It Is A Inherent Property
Of A Material By Virtue Of Which It Resists
Any Change In Its Direction Of Motion.
9. Once
airborne, this
ball would not
stop unless
acted on by
an unbalanced
force (gravity
and air – fluid
friction), it
would never
stop!
10. Why then, do we observe
every day objects in
motion slowing down and
becoming motionless
seemingly without an
outside force?
It’s a force we sometimes
cannot see – friction.
12. NewtoN’s 2Nd Law of MotioN
It states that the rate of change of
momentum is directly proportional to the
force applied and change takes place in
the direction of force applied
Alternatively, it is also stated as the force
is directly proportional to product of mass
and acceleration produced by the force.
F α m*a
F = m*a
13. 2ND LAW
When mass is in kilograms and acceleration is in
m/s/s, the unit of force is newton (N).
One newton is equal to the force required to
accelerate one kilogram of mass at one
meter/second2
15. NewtoN’s 3rd Law of MotioN
It states that every action has equal and
opposite reaction.
By newton’s 3rd law of motion
Faction=-Freaction
16. According to Newton,
whenever objects A
and B interact with
each other, they exert
forces upon each
other. When you sit in
your chair, your body
exerts a downward
force on the chair and
the chair exerts an
upward force on your
body.
17. It states that in an isolated system , the
vector sum of the linear momentum of all
bodies remains conserved and is not
affected by their mutual interaction. i.e.
Initial momentum = final momentum
m1v1+m2v2=(m1+m2)v3
18. Newton's 1st Law
Because of inertia, objects (including you) resist changes
in their motion. When the car going 80 km/hour is stopped
by the brick wall, your body keeps moving at 80 m/hour.
19. Newton’s 2nd Law proves that different masses
accelerate to the earth at the same rate, but with
different forces.
• We know that objects
with different masses
accelerate to the
ground at the same
rate.
• However, because of
the 2nd Law we know
that they don’t hit the
ground with the same
force.
F = ma F = ma
98 N = 10 kg x 9.8 m/s/s 9.8 N = 1 kg x 9.8
m/s/s
20. Newton’s 3rd Law in Nature
Consider the propulsion of a
fish through the water. A fish
uses its fins to push water
backwards. In turn, the
water reacts by pushing the
fish forwards, propelling the
fish through the water.
The size of the force on the
water equals the size of the
force on the fish; the direction
of the force on the water
(backwards) is opposite the
direction of the force on the
fish (forwards).
21. The reaction of a rocket is
an application of the third
law of motion. Various
fuels are burned in the
engine, producing hot
gases.
The hot gases push against
the inside tube of the rocket
and escape out the bottom
of the tube. As the gases
move downward, the rocket
moves in the opposite
direction.
22. When an object moves or tends to move ,
that opposing force which comes into play
is known as friction.
24. There are three main types of friction:
Static friction: the force of friction which comes
into play when a body is at rest over the surface of
other.
Limiting friction: the maximum value of static
friction which comes into play when body is at the
verge moving.
KineticDynamic friction: the force of friction
which acts on a actually moving body.
25. Slide a book across a
table and watch it
slide to a rest
position. The book
comes to a rest
because of the
presence of a force -
that force being the
force of friction -
which brings the book
to a rest position.
26. The force of limiting friction between two bodies in contact is
directly proportional to the normal reaction between them i.e.
FαR
The force of limiting friction is always opposite to the direction in
which an object is at the verge of moving.
The force of limiting friction is independent of apparent area of
contact as far as the normal reaction between them remains the
same.
The force of limiting friction depends upon nature of surfaces in
contact and nature of material of surfaces in contact.
27.
28. Coefficient of friction
According to 1st law of limiting friction:
FαR
F= μ R
μ=F/R
Where μ is called coefficient of limiting friction
and is defined as the ratio of limiting friction to
the normal reaction between the two surfaces in
contact.
34. advantaGes of friction
Walking is because of friction
No two bodies will stick to each
other
Vehicle’s braking system works
because of friction
Nuts and bolts would not be able to
hold the machinery together
Writing would not be possible
Adhesive will loose their purpose
35. disadvantaGes of friction
Friction always opposes motion,
therefore extra energy is required to
overcome friction
Wear and tear of machinery is caused
by friction
Friction causes production of heat
which damages the machinery