[填空题]
Assume that a 1.00-kg balle wwlr*eu h-fq5m5-b,:k ztz3 is thrown solegc/n76rri nt bbjfih8e0-fw3 4u v)f *u qt9w;ly by the action of the forearm, which rotates about the elbow joint under the action of the triceps muscle, Fig. 8– 6r-fvtr79wb *;/i8 btgfiun3c h ) jfq4unw0e45. 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
