Question

When does a body rotates

Answer 1

Explanation:

When there is a net torque acting upon it, a body rotates. We will have to provide a retarding torque to change the direction of rotation of a rotating body with a fixed axis that will eventually stop the rotation and start in the opposite direction.

Answer 2

A body rotates when it is fixed at a pivot point(axis of rotation) and force aplied on that body from a direction.