[填空题]
Suppose David puts a 0.50-kg rock into a sling of len9v( 7) oqxmji2rqx tipk5 /a/d+ j)nrbgth l z00rvz8 vjbx:j2x7q1.5 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. vxq 00lj 7zr:j28xzvbWhat 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
