[填空题]
Suppose David puts a 0.50-kg5* d t)a pv(gx62/vsrbcxglc7 rock into a sling of length 1.5 m and d y,+iz8g*bza 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 toi ,+ygzz*8 dbarque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
