[填空题]
A centrifuge rotor rotat- jjoly- tjg0;wdk ,*ting at 10,300 rpm is shut off ab.ym q2p;i(5xjs j zvn t,46(clf4cmfnd is eventually brought uniformly to rest by a frictional torque v;mb24 yx(.t l6sp5,cfjzijncmfq( 4of 1.2 $m \cdot N$ 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