A 400 lb uniform disk with center G and radius r = 3 ft is connected by a pulley system to...

A 400 lb uniform disk with center G and radius r = 3 ft is connected by a pulley system to a counterweight A weighing 75 lb. The system is initially at rest when A is allowed to drop, thus causing the disk to roll without slipping to the right.

Neglecting the inertia of the pulley system, determine the speed of G after A has dropped 2 ft.

Figure P8.36