A cylinder with moment of inertia 27.5 kg m rotates with angular velocity 7.04 rad/s on a frictionless vertical axle. A second cylinder, with moment of inertia 28.6 kg m". initially not rotating, drops onto the first cylinder and remains in contact. Since the surfaces are rough, the two even- tually reach the same angular velocity. 12 wa W Before After Calculate the final angular velocity. Answer in units of rad/s. part 2 of 2 Show that energy is lost in this situation by calculating the ratio of the final to the initial kinetic energy