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(II) (a) Suppose the coefficient of kinetic friction between mA and the plane in Fig. 5–38 is μk = 0.15, and that mA, = mB = 2.7 kg. As mB moves down. determine the magnitude of the acceleration of mA and mB, given 0 = 34°. (b) What smallest value of μk will keep the system from accelerating?
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