[填空题]
The forearm in Fig. 8–45 accelerates a 3.6-kg jxy5:7 rp9z vtball ai*nlbdg ;q .u/:ct) pyt 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
