[填空题]
A centrifuge rotor rotat m uc1py8;5i 8jtpjmf+iriy- u- 0wm0ting at 10,3z)-ig gyir2h oz)4 vpic:vv- ,00 rpm is shut off and is eventually brought uniformly to rest by a frictiiyhz),iv gzp- :c-r 4ovi 2g)vonal 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