[填空题]
A grinding wheel is a uniform cylinder with a radius bc24h yb /w7tlof 8.50 cm ai0:mih v hfvldq 70(.gnd a mass of 0.580q.d hgihm(i70vf l:v0 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
