Question

What is a force ?what change s can be produced by a force

Answer 1

force is the external agent of push and pull. the changes that can be produced by a force are
1. It makes a stationary object into motion.
2. It changes the shape and size of the object.
3. It changes the direction of the moving object.
4. It increases or decreases the speed of the object.
5. It can make a body to stop by frictional force.

Answer 2

Force acting on a body can change its state of rest or motion, speed, direction of motion of object, shape, size.

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The force cannot be seen or felt but can be explained on the basis of effects caused by it.

Force as that external push or pull acting on an object which changes or tends to change the state of rest for the state of uniform linear motion of an object. A force may also deform an object.

Pressure:-

Force acting normally on a unit surface area is called pressure. Liquid and gases exert pressure in all directions.

Turning effect of force:-

A force is associated with translation motion in which an object moves as a whole along a given path. However, under suitable conditions, A force can turn an object about a given axis. This is known as turning effect of force.

Example:-

♦ When you apply force on the handle of a door, the door turns around the hinges.

♦ When a driver applies a force on the steering wheel of his car, it causes turning effect on the wheel.