At the instant shown the block A of weight WA is moving down the plane at v0 while being attached to the block B of weight WB. If the coefficient of kinetic friction is μ_k, determine the acceleration of A and the distance A slides before it stops. Neglect the mass of the pulleys and cables. Given:

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WA = = 100 lb WB = 50 lb ft VO = 5= S μk = 0.2 a = 3 b = 4