[填空题]
Suppose David puts a 0.50-kg roc )y)kc bocl1szuf7;1rk into sgelryx r+) au6 1i+ /8jo6yada sling 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 where does the torque c1 u+8d/yoxa ag)le6jrs6+i ryome from? $m \cdot N$
Post time 2025-2-18 20:00:22
