The drum has a mass of 50 kg and a radius of gyration about the pin at O of kO = 0.23 m. S...

The drum has a mass of 50 kg and a radius of gyration about the pin at O of kO = 0.23 m. Starting from rest, the suspended 15-kg block B is allowed to fall 3 m Without applying the brake ACD. Determine the speed of the block at this instant. If the coefficient of kinetic friction at the brake pad C is μk = 0.5, determine the force p that must be applied at the brake handle which will then stop the block after it descends another 3m. Neglect the thickness of the handle.