Physics Rotational Mechanics Level: Misc Level

A uniform solid sphere of mass 5 kg and radius 30 cm is rotating about an axis through its center at the rate of 180 rev/min. Find the kinetic energy of the sphere. The rotational inertia of a uniform sphere is 2/5 mr2.

a.16 /J

b. 64/j

c.32 /J

d. 24/J