[填空题]
The forearm in Fig. 8–4 i8vhi(9 /v0* wriprijl 4kt7oxe)qq7 mbz2h2 5 accelerates 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
