A wheel of mass 8 kg and radius 40 cm is rolling on a horizontal road with angular velocity 15 rad/s. If moment of inertia of the wheel about its axis is `0.64 kg m^(2)`, then the rolling kinetic energy of wheel will be

Options

A. 288 J
B. 216 J
C. 72 J
D. 144 J

Answer

B

Explanation

`K.E. = (1)/(2)mv^(2)(1+(K^(2))/(R^(2)))`