[填空题]
The forearm in Fig. 8–45 accelerates a 3.zzcph( ,)oyzxaujh h ,73w ra0.sc-a )6-kg b(s+c zrp.vl wq-f:r92a/ to,vtiupt-all 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
