Задача id12173

Determine the acceleration with which a block placed on a horizontal surface moves under the influence of forces F1=20 N and F2=10H, a=45° and b=30° applied to it. Coefficient of friction between the block and the plane u=0.2; mass of the block, a) m=2 kg; b) m=10 kg; c) m=1 kg. Gravity acceleration g=10 m/s2.

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