[填空题]
Suppose David puts a 0.50-kg z9e 2-2 ai*vs- dw gpia,sl -hh34cdsurock into a sling of length 1.5 /ebs wsbm2 rh161 .1 opq0xegtm and begins whirling the rock in a nearly horizontal circle above his head, q6 ts1 /wrb.2gbpeo01esx1m haccelerating 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
