[填空题]
(a) What is the angular momentum of a 2.8-kg udpnm9av2.4 stz t./ws niform cy8nxn b9mu oe62lindrical grinding wheel of en ob26x u89mnradius 18 cm when rotating 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
