[填空题]
A centrifuge rotor rotating at 10tnuxzfka af-(6j 58 5h0a;d a)r)sqev,300 rpm is shut off and is event ltdp qcma*()bf(f45vually brought uniformly to rest by a frictitqac(54f()fld vb pm* onal 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
