Question

5. When does a body rotate ? State one way to change
the direction of rotation of the body. Give a suitable
example to explain your answer.​

Answer 1

Answer:

physics

Explanation:

when a body is fixed about a fixed point called pivot then the body rotates.

we can change the direction of rotation of body by applying force in the opposite direction.

for example a door which is fixed at hinges and free to rotate in any direction.

I hope it helps.

Answer 2

A body rotates when there is a net torque acting on it. to Change the direction of rotation of a rotating body with fixed axis we will have to provide a retarding torque which will ultimately stop the rotation and will start in the opposite direction. As a result the direction of rotation of the body will change. But if the axis is not fixed then the direction of rotation may be reversed simply by reversing the axis of rotation.