A ball rolls without slipping. The radius of gyration of the ball about an axis passing through its centre of mass is `k`. If radius of the ball be `R`, then the fraction of total energy associated with its rotation will be.

Options

A. `k^(2)/(k^(2)+R^(2))`
B. `R^(2)/(k^(2)+R^(2))`
C. `(k^(2)+R^(2))/R^(2)`
D. `k^(2)/R^(2)`

Answer

a