[填空题]
The forearm in Fig. 8–45 accs6c7i dt*cu+gy qz; o)elerates a 3.6 0n0,nax x kao;244kgq50l hcok npbf:-kg 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
