A centrifuge rotor rotating at 9800 rpmrpm is shut off and iseventually brought uniformly to rest by a frictional torque of 2.22mâ‹…Nmâ‹…N .
Part A
Please Express your answer to three significantfigures.
If the mass of the rotor is 3.67 kgkg and it can be approximatedas a solid cylinder of radius 0.0640 mm , through how manyrevolutions will the rotor turn before coming to rest?
Part B
Express your answer to three significant figures andinclude the appropriate units.
How long will it take?