[填空题]
Suppose David puts a 0.50-kg rock into a sling of lengt,sodw5 n0q2t, tdtb9ph 1.5 m and begins whir jq53 im84fgoof*brq p7gj4b(ling 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 r (qr48io ggj 3b*f4bomp57fq jequired to achieve this feat, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
