[填空题]
A centrifuge rotor rotating at 10,300 rpm is shuk 0tqxlt j4 j4-hl:s/ut off any fgs6 -ijy:2zgqlh(ad /0l,od is eventually brought uniformly to rest by a frictiona y6l(/ aj2fsg:-h0zd,gq y ilol torque of 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