[填空题]
A grinding wheel is a uniform cylinder with a rav f1y) d:7omxs 3y5rpldius of 8.50 cm and a mass ooram42uj+ih +f 0.580 kg. Cal aj4h 2m+io+urculate (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
