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A horizontal plank with a frictionless axis of rotation at its center has a large mass at one end and a small mass at the other end (both are the same distance from the axis). It is initially held stationary and then released from rest. As the plank rotates (and before one end hits the ground), how do the magnitude of the net torque on the plank about the axis and the magnitude of the angular velocity vary
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A horizontal plank with a frictionless axis of rotation at its center has a large mass at one end an...
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