Question: Use the information below to answer the next two questions. A 25-kg block, A, is on a rough surface and is connected by a string

Use the information below to answer the next two questions. A 25-kg block, A, is on a rough surface and is connected by a string over a frictionless pulley to a A 10-kg block, B, as shown at right. The string and pulley are massless. The coefficient of static friction between block A and the rough surface is 0.45, and the B coefficient of kinetic friction is 0.20. The blocks are released from rest. What friction force acts on block A once the system is released? What is the direction of the total force exerted on the surface by the block A once the system is released

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