Question

A particle of mass m in a radius r moves with a constant speed v . The work done when it completes one circle is

Answer 1

work done = force x displacement

here force is centripetal force(mv^2/r)

but in this case as the particle completes one full circle,the displacement will be 0,

thus work done = [mv^2/r] x 0 = 0

therefore the work done = 0

hope this helps

Answer 2

Answer:

0

Explanation: