The block A of mass m_A rests on the plate B of mass m_B in the position shown. Neglecting the mass of the rope and pulley, and using the coefficients of kinetic friction indicated, determine the time needed for block A to slide a distance s' on the plate when the system is released from rest.

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Given: mA = 10 kg mB = 50 kg s' = 0.5 m HAB = 0.2 HBC = 0.1 8 = 30 deg 8 = 9.81 2 S