[填空题]
Suppose David puts a 0tjx;:1i 2tws+rvp ft7.50-,zk zj-,whcj-gj*lz17li5a6 tpnj phm8dn /5kg rock into a 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 torque required to achieve this feat, and where does the torm6-,nw8-lig7 jzl1,pz5chz*jtj njk h a 5d/pque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
