[填空题]
Assume that a 1.00-kg ball is thrown solexsga npfjod-z08 r9+ -ly by the action of the forearm, which - + pra0fsdjx8ngo9 -zx t+s7q)v3xq ;h 0dc l71ah38mju fhhyrotates about the elbow joint under the action a 0xtylhf+ h8hhqujx s3;c7q)3dv1m7 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
