[填空题]
Suppose David puts a 0.50-kg rock into a sling of le(t7hs1:*)rao d lmejrngth 1.5 m and begins whirli)(* 7hora1j med:lrt sr*v.6 nqgxq a;i d4fhw2e6yl88x3 m;ikg a) jxng the rock in 82n qyxqfjwkivrxe6h3 ;;d il.a)8xg*4 gm6aa 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 torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
