Force Patran
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Govt Sen. Sec. School Patran
Presented By: 9th A Singh Kuldeep Singh Gurdeep Singh Gurpreet Singh Parminder Singh Sunil Kumar Atinderpal Singh Ravinder Singh Jagwinder Singh
Guided By: Balvir (Sci. Master)
FORCE
The concept of force gives us the quantitative description of the interaction between two bodies or between a body and the environment.
Force is an agent whose action can produce acceleration in a body.
FORCE
When you push or pull a car stuck is mud, you exert a force on it. This force may or may not be able to move the car.
A force produces the following effects.
It can move or tend to move an object. It can stop or tend to stop an object in motion. It can change or tend to change the direction of motion of an object. It can increase or decrease the speed of an object. It can change the shape or size of an object.
Forces are classified as being of two types : Contact
Non
forces.
contact forces.
Causes of Forces The
pulling of a cart by a horse. Pushing of rubble by a bulldozer. Applying brakes to stop a car.
A Force is required to produce the following: Change
in state of rest. Change in state of motion. (speed or direction)
Change in state of rest.
When we pull or push a stationary body we may be able to put it into motion. Thus a force is the cause of motion of a stationary object. Some examples are:
(3)
The pulling of a cart by a horse. The pushing of a wheel barrow. The pushing of a lawn mover.
(4) (5)
(4) The pushing of a door to open it or close it. (5) Pushing of rubble by bulldozer. (6) Pushing of water by the puddle wheel and the oar of a boat. (7) A railway engine pulls an entire train. (8) A tractor pulls a trolley.
Change in state of motion
(2)
(3)
(4)
Force also produce a change in the state of motion of an object. Thus a force is the cause of stopping or decreasing the speed of a body. Some examples are: Stopping a moving cricket ball by applying force with our hands. Applying brakes to a moving vehicle to stop it. Changing the direction of motion of a cricket ball by hitting it with a bat.
Force can move or tend to move an object.
-
-
When a force is applied on a stationary body, It can either move the body or tend to move it. The motion of the body takes place in the direction of the applied force When a football is kicked it is set into motion. A horse applies force on the cart to pull it.
Force can stop or tend to stop an object in motion. When a force is applied on a moving body, It can either stop the body or tend to stop it. For this a force is applied opposite to the direction of motion of the body. - When a football in motion has to be stopped a force is applied opposite to the direction of the motion of the football. - At times when you push a car in motion. You are unable to stop it. The force applied by us tends to stop the moving car.
Force can change or tend to change the direction of motion of an object. Force can change or tend to change the direction of motion of an object. - when a football in motion kicked perpendicular to its motion its direction of motion changes. - A cricketer applies a tangential force to change the direction of the cricket ball.
It can increase or decrease the speed of an object. When a force is applied on a moving body, in the direction of motion or opposite to it, It can change the speed of the object. - When a football in motion is kicked in the direction of its motion its speed increases. - The speed of a car can be decreased by applying brakes. - A freely falling object is accelerated toward the earth due to the gravitational attraction of the earth
Sir Isaac Newton Newton’s First Law of Motion Newton’s Second Law of Motion Newton’s Third Law of Motion
NEWTON’S FIRST LAW OF MOTION
It states ”everything in the universe stays in a state of rest or of uniform motion along a straight line until unless compelled by an external fore to change its state.” It consists two parts A body cannot change its state of rest by itself. A body cannot change its state of motion by itself.
NEWTON’S SECOND LAW OF MOTION
It states ”The rate of change of momentum is directly proportional to the applied force and the change takes place in the direction of the applied force.”
NEWTON’S THIRD LAW OF MOTION
It states ”whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first.” In other words ” to every action there is an equal (in magnitude) and opposite (in direction) reaction.
INERTIA
It is the inability of a body to change itself, its state of rest or uniform motion. It is the property of a body by virtue of which it opposes any change in its of rest or of uniform motion.
Types of inertia (1) Inertia
of rest (2) Inertia of motion (3) Inertia of direction
Inertia of rest
The inherent property of a body by virtue of which it cannot change its state of rest is called Inertia of rest. e.g. Suppose you have a stack of five rupees coins. If a sudden push is given to any one coin in the stack. We find that the stack does not fall as the remaining coins stay in a state
Inertia of motion
The inherent property of body by virtue of which it cannot change its state of motion is called Inertia of motion When a rotating fan is switched off it continues to rotate due to Inertia of motion
Inertia of direction
The inherent property of a body by virtue of which it cannot change its direction of motion is called inertia of direction. e.g. While sharpening a knife, sparks fly off tangentially from the grinding stone, due to inertia of direction.
Presented By: 9th A Singh Kuldeep Singh Gurdeep Singh Gurpreet Singh Parminder Singh Sunil Kumar Atinderpal Singh Ravinder Singh Jagwinder Singh
Guided By: Balvir (Sci. Master)
FORCE
The concept of force gives us the quantitative description of the interaction between two bodies or between a body and the environment.
Force is an agent whose action can produce acceleration in a body.
FORCE
When you push or pull a car stuck is mud, you exert a force on it. This force may or may not be able to move the car.
A force produces the following effects.
It can move or tend to move an object. It can stop or tend to stop an object in motion. It can change or tend to change the direction of motion of an object. It can increase or decrease the speed of an object. It can change the shape or size of an object.
Forces are classified as being of two types : Contact
Non
forces.
contact forces.
Causes of Forces The
pulling of a cart by a horse. Pushing of rubble by a bulldozer. Applying brakes to stop a car.
A Force is required to produce the following: Change
in state of rest. Change in state of motion. (speed or direction)
Change in state of rest.
When we pull or push a stationary body we may be able to put it into motion. Thus a force is the cause of motion of a stationary object. Some examples are:
(3)
The pulling of a cart by a horse. The pushing of a wheel barrow. The pushing of a lawn mover.
(4) (5)
(4) The pushing of a door to open it or close it. (5) Pushing of rubble by bulldozer. (6) Pushing of water by the puddle wheel and the oar of a boat. (7) A railway engine pulls an entire train. (8) A tractor pulls a trolley.
Change in state of motion
(2)
(3)
(4)
Force also produce a change in the state of motion of an object. Thus a force is the cause of stopping or decreasing the speed of a body. Some examples are: Stopping a moving cricket ball by applying force with our hands. Applying brakes to a moving vehicle to stop it. Changing the direction of motion of a cricket ball by hitting it with a bat.
Force can move or tend to move an object.
-
-
When a force is applied on a stationary body, It can either move the body or tend to move it. The motion of the body takes place in the direction of the applied force When a football is kicked it is set into motion. A horse applies force on the cart to pull it.
Force can stop or tend to stop an object in motion. When a force is applied on a moving body, It can either stop the body or tend to stop it. For this a force is applied opposite to the direction of motion of the body. - When a football in motion has to be stopped a force is applied opposite to the direction of the motion of the football. - At times when you push a car in motion. You are unable to stop it. The force applied by us tends to stop the moving car.
Force can change or tend to change the direction of motion of an object. Force can change or tend to change the direction of motion of an object. - when a football in motion kicked perpendicular to its motion its direction of motion changes. - A cricketer applies a tangential force to change the direction of the cricket ball.
It can increase or decrease the speed of an object. When a force is applied on a moving body, in the direction of motion or opposite to it, It can change the speed of the object. - When a football in motion is kicked in the direction of its motion its speed increases. - The speed of a car can be decreased by applying brakes. - A freely falling object is accelerated toward the earth due to the gravitational attraction of the earth
Sir Isaac Newton Newton’s First Law of Motion Newton’s Second Law of Motion Newton’s Third Law of Motion
NEWTON’S FIRST LAW OF MOTION
It states ”everything in the universe stays in a state of rest or of uniform motion along a straight line until unless compelled by an external fore to change its state.” It consists two parts A body cannot change its state of rest by itself. A body cannot change its state of motion by itself.
NEWTON’S SECOND LAW OF MOTION
It states ”The rate of change of momentum is directly proportional to the applied force and the change takes place in the direction of the applied force.”
NEWTON’S THIRD LAW OF MOTION
It states ”whenever one object exerts a force on a second object, the second exerts an equal and opposite force on the first.” In other words ” to every action there is an equal (in magnitude) and opposite (in direction) reaction.
INERTIA
It is the inability of a body to change itself, its state of rest or uniform motion. It is the property of a body by virtue of which it opposes any change in its of rest or of uniform motion.
Types of inertia (1) Inertia
of rest (2) Inertia of motion (3) Inertia of direction
Inertia of rest
The inherent property of a body by virtue of which it cannot change its state of rest is called Inertia of rest. e.g. Suppose you have a stack of five rupees coins. If a sudden push is given to any one coin in the stack. We find that the stack does not fall as the remaining coins stay in a state
Inertia of motion
The inherent property of body by virtue of which it cannot change its state of motion is called Inertia of motion When a rotating fan is switched off it continues to rotate due to Inertia of motion
Inertia of direction
The inherent property of a body by virtue of which it cannot change its direction of motion is called inertia of direction. e.g. While sharpening a knife, sparks fly off tangentially from the grinding stone, due to inertia of direction.
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