Power, angular velocity and torque for a motor driving an electric grinding wheel physics problem.

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In this electric grinding wheel physics problem, given the power output of an electric motor, we compute the final angular speed of a heavy grinding wheel after a known amount of time. We use the average power in the electric grinding wheel and rotational kinetic energy to get the final angular velocity. Then, by computing the moment of inertia of the grinding wheel and the angular acceleration, we find the average torque output of the motor.