[填空题]
(a) What is the angular momentum of a 2.8-kg u6mqjr/lf ,04uwu*k atniform cylindrical grinding wheel w/k *lf 4u6qtm ,ru0jax heyim/n-d19of radius 18 cm when rotatem 9-1/xdhyin ing 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
