[填空题]
Suppose David puts a 0.50(kj*794ymevof qy 8c rsmdns*5 bryd:(:y )bb-kg rp m4m9ke haxjc/7+l - 76uhqzgock into a 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 tl khpx9qm+z auj/mg47c7-6e h his feat, and where does the torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
