[填空题]
Suppose David puts a 0.50-kg rochwzt( 0c hh9f*ot syl3y,c5jf ar:n25 k into a sling of length 1.5 m and begins whirlg-cs9,cd ml *6pmdw+o ing the rock in a nearly 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 tm6 m slpdw9,cdoc+g *-he torque come from? $m \cdot N$
Post time 2025-2-18 20:00:22
