Two blocks, A and B (with mass 55 kg and 105 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is M = 0.28. Determine the change in the kinetic energy of block A as it moves from to D, a distance of 16 m up the incline (and block B drops downward a distance of 16 m) if the system starts from rest. J 37° Ⓒ O B

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