[填空题]
A grinding wheel is a 0dp7 m;tnnhk3un9ki cqx;r,3)rfc8pp l iform cylinder with a radius of 8.50 cm and a mass of 0.58 xk,rpfp li8q;)3 rcc90 kg. Calculate (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
