A flywheel, mass 100 kg and radius of gyration 20 cm mounted on a weightless horizontal axle, radius 2 cm, free to rotate in frictionless bearings, has a weightless string wound on the axle carrying at its free end a mass of 5 kg. prove tha the acceleration of thus mass when the system is released from rest is `(g//2001) ms^(-2)`, and that if the string slips off the axle after the mass has descended 2m, a couple of 0.318 kg wt m would bring the flywheel to rest n 5 revolutions.