[填空题]
A grinding wheel is a uniform cylinder with a radius of 8.z7hitk 5 1z,bwogcz4)50 cm and a mass1 jqd :+(pu2t wvu24l5mr70yqeqwiu oir 4j.f of 0.580 kg. Caf4.t:u5yv+0mjq 12prwj2e74(q l o riuidquwlculate (a) its moment of inertia about its center, $\approx$ $kg \cdot m^2$ (b) the applied torque needed to accelerate it from rest to 1500 rpm in 5.00 s if it is known to slow down from 1500 rpm to rest in 55.0 s。 $m \cdot N$
Post time 2025-2-18 20:00:22
