[填空题]
(a) What is the angular momentum of 4mj*vc jdt7t( a 2.8-kg uniform cylindrica81v yyin,e-pq z(ncy8l grinding wheel of radius 18 cvi y1,q8cy-( nzn8 yepm 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
