[填空题]
The forearm in Fig. 7q10mke(a(rl z9.rcm romg *b8–4ri4 y 4et2;d oek7nnf: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
