Physics
posted by Justin .
Suppose you exert a force of 180 N tangential to a 0.280mradius 75.0kg grindstone (a solid disk). (a)What torque is exerted? (b) What is the angular acceleration assuming negligible opposing friction? (c) What is the angular acceleration if there is an opposing frictional force of 20.0 N exerted 1.50 cm from the axis?
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