R2-17. The drum has a mass of 50 kg and a radius of
Chapter 21, Problem R2-17(choose chapter or problem)
R2-17. The drum has a mass of 50 kg and a radius of gyration about the pin at O of ka = 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 /x* = 0.5. determine the force P that must be applied at the brake handle which will then stop the block after it descends another 3 m. Neglect the thickness of the handle.
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