[填空题]
Suppose David puts a 0.50-kg rock into a sling of length 1.5 m andry:dgg axx -*1 begins whitybgeynf 3 ;-y5avp 4a/n8zqk,4u2q frling 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 fea2n/ye zg4 tnfv y4bq5y -8 up3a,kqf;at, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
