Question

A body is moving with constant velocity v along a circular path of radius r.how much work done by the centripatal force in revolingntl the body?

Answer 1

Answer:

Zero work

Explanation:

This is because the instantaneous displacement is perpendicular to the centripetal force.

therefore W=F.dS=FdS cos(90)=0

Answer 2

Answer:
We know that the angle between the force and radius is 90 while moving on the circular motion. We also know that the work done is the scalar product of the force and distance and therefore the total work done os zero.