R2-18. The drum has a mass of 50 kg and a radius of
Chapter 21, Problem R2-18(choose chapter or problem)
R2-18. The drum has a mass of 50 kg and a radius of gyration about the pin at O of k0 = 0.23 m. If the 15-kg block is moving downward at 3 m/s, and a force of P 100 N is applied to the brake arm, determine how far the block descends from the instant the brake is applied until it stops. Neglect the thickness of the handle. The coefficient of kinetic friction at the brake pad is jik 0.5.
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