A solid sphere of radius R, a solid cylinder of radius R, and a
hollow cylinder of radius R all have the same mass, and all three
are rotating with the same angular velocity. The sphere is rotating
around an axis through its center, and each cylinder is rotating
around its symmetry axis. Which one has the greatest rotational
kinetic energy?
both cylinders have the same rotational kinetic energy
the solid cylinder
the solid sphere
they all have the same...