[填空题]
Assume that a 1.00-kg ball is thrown solely by the action of the forearm, whi9ta;o/qip n+zch a;to+qniz9 /p y*- 1du.6-p qciogu gjyb(.wrrotates about the elbow joint under the action of the triceps muscle, Fig. 8–4d p.o1u ji6*rq-guy .b (-gywc5. 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
