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A wheel free to rotate about its axis that is not frictionless is initially at rest....

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Physics

A wheel free to rotate about its axis that is not frictionlessis initially at rest. A constant external torque of +53 N·m isapplied to the wheel for 21 s, giving the wheel an angular velocityof +624 rev/min. The external torque is then removed, and the wheelcomes to rest 120 s later. (Include the sign in your answers.)

(a) Find the moment of inertia of the wheel.

(b) Find the frictional torque, which is assumed to beconstant.

Answer & Explanation Solved by verified expert
3.9 Ratings (627 Votes)
Assuming I Moment of inertia alpha angular acceleration wf Angular Velocity Te External torque 53 Nm Tf Frictional Torque constant for first case Tn Net torque 1 and    See Answer
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