Question

what will be the work done by centripetal force?

Answer 1

zero.......................

Answer 2

we know that , work done = F.s , this means work done is zero when force(F) and displacement (s) is at 90 degree angle. so from above figure , it is clear that force and path of motion i.e . displacement is at 90 degree.hence, the workdone by centripetal force is zero.