[填空题]
Suppose David puts a o*lvb0:lu7le pjv 76 d0.50-kg rock into a sx2 1dzy0io v)fling 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 wherev) o2 zyfxdi10 does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
