[填空题]
(a) What is the angue e+(qt ky. v)nz(qqd1dis02 ss)ed/ clar momentum of a 2.8-kg uniform cylindric r)qen.pe:9bi al grinding wheel of radius 18 cm when ro:neqepi9.b r)tating at 1500 rpm? $kg \cdot m^2$ (b) How much torque is required to stop it in 6.0 s? $m \cdot N$
Post time 2025-2-18 20:00:22
