[填空题]
Suppose David puts a 0.50-kg app q63q4kwxz2qf0d +u:)umurock into a sling lq,t6 v u6s djoo2qi::of i.:qof 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 aquq:ofvi o o.,s :l2:qtji6d6fter 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
