[填空题]
Assume that a 1.00-kgy4c)d w+qf7t5fwhpf q xc)d3 .k+jx.f ball is thrown solely by the agj96-1( vy 9ioirws6q 7pty+l5e zmlb ction of the forearm, which rotates about the elbow joint under the action of the triceps muscle, Fig. 8–45. T5vwylqz6 9 ptbj siyroi+7(le1 9g-m6he 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
