[填空题]
Assume that a 1.00-kg ball is thrown solely by the actio)hd ms7:d*5 y vswhev.n of tpjl vws* rgdv38;+y5l6gdvo 6he forearm, which rotates about the elbow joint undews3vdj; 8l d5*vgpo6vr 6g l+yr the action of the triceps muscle, Fig. 8–45. The ball is accelerated uniformly from rest to 10 $m/s$ in 0.350 s, at which point it is released. Calculate (a) the angular acceleration of the arm, $rad/s^2$ (b) the force required of the triceps muscle. Assume that the forearm has a mass of 3.70 kg and rotates like a uniform rod about an axis at its end. N
Post time 2025-2-18 20:00:22
