[填空题]
Suppose David puts a 0.50-kg rock into a sling of length 1.5 m and begins wb c-2vyb:x p-thh1mm2gwl2 /j ikcux;vv0 oq01 9jl.eqirling the rock in a nearly horizontal circle above his head, accelerating it from rest ;eqxv vo/2 lkcuwm. i901j1j0hgqm2 l 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
