[填空题]
Suppose David puts a 69svr 6ouv srug:7v-ymc e7js8/ .zx95ulyyy0.50-kg rock into a sling of length 1pb-glamv9 c+d 5; ;i/mnrxj5 z.5 m and begins whirling the rock in a nearly horizontal circle above 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, annl+;jz9racxv5m-gpdb5 /i;m d where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
