1. The problem statement, all variables and given/known data If two cylinders have the same rotational energy, do the cylinders, though having either different radii or different masses, have the same tangential velocity? 2. Relevant equations Rotation Equations (torque, etc) 3. The attempt at a solution My gut feeling says yes, because of the conservation of energy. Thank You for any help. EDIT: My gut feeling says yes, because of the conservation of angular momentum?