[填空题]
(a) What is the angularx-dqrb,s 9,lg3uoby6 a2 1e lw/msfq(y5r-x.9bd hf x momentum of a 2.8-kg uniform cylindrical grinding wheel of radius 18 cm when rotating atb5rf/xdfqm .9 s (y-xh 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
