Question

an object is moving in circle at fixed speed if the resultant force of an object is f then why this force work done on this object​

Answer 1

well it depends on the distance that the particle has travelled.

But,

if we consider the W.D of the object after one complete revolution.

Then ,

W.D=F×DISPLACEMENT

W.D=F×0

SO, W.D of the particle will be 0 joules