[填空题]
A grinding wheel is a uniform cylinder with a radius g)awx(0) j 9fh;yazczof 8.50 oy :t;f5u1w u bpjrsc8z5tl53cm and a mass of 0.580 kg. Callf uzp5513wttc8:5sy oju; brculate
(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。 $m \cdot N$
