[填空题]
Assume that a 1.00-kg ball is thrown solely by the action p 3oy/k;r5ot:vb 54i mj b8tzfnipg75 ofwgmt1 zb yjz g-h4r)5f+shz 9 -8n5sim the forearm, which rotates about thhyn5b t8smzj4 fg5)w- 9s- grzzh1+im e elbow joint under 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
