Question

work done in linear motion is defined by W=F.ds , what is it's analogue in rotational motion ? ​

Answer 1

Answer:

Rotational Analogue of force in linear motion is torque.

τ=r×F

Force is necessary for a body to do translational motion. Similarly it is the torque which is required to rotate a body. If net torque applied on the body about the axis of rotation is zero, then the body doesnot rotate.