how large does m have to be to start the blocks moving? Please answer in kilograms.
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A mass M is at rest on a tilted tabletop, tied to a string which is tied to a second mass m that hangs off a pulley on the edge of the tabletop. The tabletop is tilted at an angle of ? = 15 degrees. If the coefficient of static friction between M and the tabletop is ?s = 0.7, and M = 2.5kg, how large does m have to be to start the blocks moving? Please answer in kilograms.
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