[填空题]
Suppose David puts a 0.50-kg rock into a sling o,)cqpq- y2az bf length 1.5 m and begins wolxio6 ;j 7:egb(5k idhirling the rock in a neaoogkxd i l(7;56:bjie rly 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 come from? $m \cdot N$
Post time 2025-2-18 20:00:22
