[填空题]
The forearm in Fig. 8–45 accelerates(1f,bom/d w6e,arsn hqg/w ul +r1xc+ a 3.6-k*morm 6uxl j vau:ch2 j4l615tg ball at 7 $m/s^2$ by means of the triceps muscle, as shown. Calculate (a) the torque needed, $m \cdot N$ (b) the force that must be exerted by the triceps muscle. Ignore the mass of the arm. N
Post time 2025-2-18 20:00:22
