[填空题]
Assume that a 1.00-kg ball is thrown solely by t7hfh / fxzye8+ac qz gh1c)yv .t9t5f n5g)jt5he action of the fo5u;ibc9e,g euop :*;dhztpgd8.ya i ,0cf ,lprearm, which rotates about the elbow joint under the action of the triceps muscle, Fig. 8–45. The ball is accelerated uni u, ybe,hicc z f:pd5t.;a0pugg9;8,pd*le ioformly 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
