a flywheel is made of a solid disk with a mass m of 5.00 kg mounted on a small radial axle. the mass of the axle is negligible. the radius r of the disk is 6.00 cm and the radius r of the axle is 1.20 cm. a string of negligible thickness is wound around the axle. the string is pulled by an electric motor that exerts a vertical tension force t on the flywheel. the flywheel is initially at rest. at time t
