[填空题]
The forearm in Fig. 8–45 ac ssspmbgw 0+6 *vm, ry+d(f. vap;y;wbk,lku *celerateaut g(/z:p;c,t ,,w7j irzbxg s a 3.6-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
