[填空题]
A grinding wheel is a unxza(i;c ,h zqxg0 0bb(iform cylinder with a radius of 8.50 cm and a maccbdjr+o) rw:;u jj+n.j 0;(dipu6uxss of 0.580 kg. Calcula+ i0ur)x6cr:+dj c . (jbdn;jw;up joute (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
