[填空题]
A centrifuge rotor rotating at 10,300 rpm is shutkujvi+ (9 v6xzg8s9bz7u qy6f off a0pn-r (8q b3ajgfk15olicr o;nd is eventually brought uniformly to rest byfag p(krqc-i0ob3r8 n ljo51; a frictional 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
