Question

why is the work done on an object does moving with uniform circular motion zero​

Answer 1

Answer:

For an object moving in uniform circular motion, the only force is the centripetal force, which points in a direction along the radius of the circle, and since the radius of the circle never changes, there is no displacement along this direction, and the work done by this force is zero.

Answer 2

Explanation:

What is the formula of work? Force * displacement.

When a body moves in a circular path, it returns to the same position from where it started. So, it's initial and final positions are the same. So, its displacement is 0.

Now, work = Force * 0

This is equal to 0

So, actually no work is done.