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A string is wrapped around a disk of mass m = 1.9 kg and radius R = 35 m, which is fixed to an axle that goes through its center. You pull the string with a constant force F = 8 N to unravel it. The torque is of 5.45 Nm due to friction between the axle and the disk. The moment of inertia of a solid disk rotating about its center is given by I = MR2 /2.
What is the
Assuming it starts from rest, how fast will the disk be spinning after the string is pulled for 3.00 seconds? Give your answer in revolutions per minute (rpm).
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