[填空题]
Suppose David puts a 0.50-kg roild46k )ulfp*hz-a 5 vl 902c4scvokcck into a sling of length 1.5 m and begins;h8 9ru exp)pd5xlqih6 ;ib1v,fud, u whirling the rock in a nearly horizontal circle above his heaid vq,uhibxur9 ; dpfu1x)568,l;hped, 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
