[填空题]
A centrifuge rotor rotating at ya1. m cjw94 p:(u1gyunayl+ollv)j 810,300 rpm is jh 2n2qe 0ein*shut off and is eventually brought uniformly e2ijq*0n neh2to rest by 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
Post time 2025-2-18 20:00:22
