[填空题]
A centrifuge rotor rotating at 10,300 rpm isnyjo1w )uvt)x6 )(h)dbb)g co shut off and is 44jzb5q0 g 1hcqcpzqax5r q3vqwm 6id:;pp09eventually brought uniformly to rest by a frictional torque of 1.23z5;jdz pqvhg1wbq 9 cq 0r5pc4qa:x6p 4i0m q $m \cdot N$ If the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.0710 m, through how many revolutions will the rotor turn before coming to rest, $rev$ how long will it take? s