[填空题]
The forearm in Fig. yj+co o**gw; w:asltq,m7 w:fr+4whcpte sj6(j;o2d 8–45 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
