[填空题]
Assume that a 1.00-kg balla w*:g+ c1w7.nxc3htt n* iahy is thrown solely by the action of the foreafhv3cjhm08q( rm, which rotates about the elbow joint under the action of the triceps muscle, Fig. 8–45. The ball is accelerated un cvmh380( qfhjiformly 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
