A hollow sphere rolls without slipping on plane surface. The ratio of kinetic energy of rotation to the total kinetic energy is

Options

A. `1//3`
B. `2//5`
C. `1//4`
D. `3//4`

Answer

B

Explanation

`(k^(2)//R^(2))/(1+k^(2)//R^(2))=(2//3)/(1+2//3)=(2//3)/(5//3)=(2)/(5)`