To start her lawn mower, Allison pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its center of axis of f I= .650 kg•m2 and a radius of 5.50 cm. There is an equivalent frictional torque impeding her pull of torque final = .500 m•N. To accelerate the pulley at alpha= 2.25 rad/s, how much torque does Allison need to apply to the pulley?

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.