A ring is kept on a rough inclined surface. But the coefficient of friction is less than the minimum value required for pure rolling. At any instant of time let `K_(T) and K_(R)` be the translational and rotational kinetic energies of the ring, then

Options

A. `K_(R)=K_(T)`
B. `K_(R) gt K_(T)`
C. `K_(T) gt K_(R)`
D. `K_(R) =0`

Answer

C

Explanation

Friction in this case is backward. If it is insufficient, it is a case of forward slipping or `K_(T) gt K_(R)`.