Question: The two blocks (m1 = 18 kg and m2 = 92 kg) in the diagram below are not attached to each other. The surface where

The two blocks (m1 = 18 kg and m2 = 92 kg) in the diagram below are not attached to each other. The surface where they are in contact is rough, but the surface underneath the larger block is essentially frictionless. If the minimum horizontal force required to keep the smaller block from slipping down the larger block is 420 N, what is the coefficient of static friction at the surfaces where the blocks touch?

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