Question

What is a force?what changes can de produced by a force

Answer 1

A force is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects, there is a force upon each of the objects. When the interaction ceases, the two objects no longer experience the force. Forces only exist as a result of an interaction.
force can bring about a change in the direction of moving object ,make an object which is moving at rest, put an object in motion, change the shape of an object,etc

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.

Force can produce:-

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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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.