Question

A body of mass 100g is rotating in a circular path of radius 'r' with constant speed.The work done in one complete revolution is:

• A. (100r) J
• B. $\left(\frac{r}{100}\right)J$
• C. $\left(\frac{100}{r}\right)J$
• D. $zero$

Answer 1

The correct option is D $zero$

Work done depends on displacement amd force .

In this case displacement is zeero as initial and final positions are same so work done will be zero.