[填空题]
Suppose David puts a 0.50-kg rock into a sling of length 1.5 m w113(g16 z cf wppcpifand begins whiyv k:no 7id0q(rling the rock in a nearly horizd k: qi7v(o0ynontal 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
