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Two blocks with masses m1 = 1.40 kg and m2 = 3.00 kg are connected by a massless string, as shown in the Figure. They are released from rest. The coefficent of kinetic friction between the upper block and the surface is 0.390.In the figure m1 is on top of a horizontal table with a pully connecting m1 and m2 which is hanging off the edge of the table.

Assume that the pulley has a negligible mass and is frictionless, and calculate the speed of the blocks after they have moved a distance 20.0 cm.

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