A sphere of radius R, a cylinder of radius R, and a rod of length L = 2R all have the sa...

A sphere of radius R, a cylinder of radius R, and a rod of length L = 2R all have the same mass, and all three are rotating about an axis through their centers (Fig. 9.2). If the objects all have the same angular velocity, which one has the greatest rotational kinetic energy, (a) the sphere, (b) the cylinder, or (c) the rod?