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Two blocks, A and B (with mass 50 kg and 100 kg, respectively), are connected by a string. (one mass is on the incline, the other is hanging from the pullye) The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is ┬Ák = 0.21. Determine the change in the kinetic energy of block A as it moves from C to D, a distance of 20 m up the incline if the system starts from rest.

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