A record is spinning at 60 rpm when the record player is turned off and friction...
A record is spinning at 60 rpm when the record player is turned off and friction brings the record to a stop. The record has a mass of 0.72 kg and a radius of 15cm. The moment of inertia for a disk rotating about its center is ½MR2. If the average frictional torque is 8.2 x 10-4 N•m, determine:
a.How long does it take the record to come to a stop?
b.How many revolutions does the record make while stopping?
Please show all math steps and how to set up the equations. Thanks!
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