[填空题]
A centrifuge rotor rotating at 10,300 rpm is shut off and is eventua/04l1 s zkhqgoc* o/fzyli0g 1lljdr(t38bielud ,l c31 y brought uniformly to rest by a frictionj(tu ld lbcrd81ei,33al 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