[填空题]
Suppose David puts al,b,cvoqwg w6q0 s31 j 0.50-kg rock into acef3(- nf) iiw sling of length 1.5 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)-w3cen (f ifi torque required to achieve this feat, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
