Question

WHAT IS THE WORK DONE IN UNIFORM CIRCULAR MOTION ??? IS IT NECESSARY,FORCE TO DO WORK?? HOW KINETIC ENERGY IS RELATED TO MOMENTUM???

Answer 1

In uniform circular motion, the work done by centripetal force is always zero.
No, it is not necessary that all forces must do work.
Since,
linear momentum (P) = mass(m) * velocity(v).
kinetic energy = (1/2)mass* square of velocity.
so
kinetic energy=( P*v)/2.

Here, P:- Linear Momentum
.