[填空题]
Assume that a 1.00-kg ball is tdpcvl7r u cc(z lj/7 t68yq+y:hrown solely by theog04 nt wj5.sbq/y eqz pf8f k+(rw0+k action of the forearm, which rotates about the elbow join.ktofyqg0b kn fq + +r0 4p/5e(w8jwszt under the action 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
