[填空题]
Suppose David puts a 0.5 r1wisegqv,qh k/*tp k: h2k9+0-kg rock into a sling of length 1.5 m and beg))/w6 zpl (y-8 fpmv9eylkiveins 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 requ vilmy8/kpezwp y))-(e6vf l 9ired to achieve this feat, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
