[填空题]
Suppose David puts a 0sk w*sktj-lg w3o)0j1 .50-kg rock in4 g1 c eem9bx8uznp4cd2 g)s.l1wkb v,to a sling of length 1.5 m and begins whirling the rock in a nearly horizontal circle a 44k lvpm1b 9e2)z sub. 8ngwdge1,xccbove his head, accelerating it from rest to a rate of 120 rpm after 5.0 s. What is the torque required to achieve this feat, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
