[填空题]
Calculate the moment of inertia of 77v irn v53x tf3:5w1(.tmmlmg oltggthe array of point+p+.t 3kdh(s *pndg wk p4on(u objects shown in Fig. 8–43 abou(p (wgu osd t+pnhk3.+d*k4npt (a) the vertical axis, $kg \cdot m^2$ (b) the horizontal axis. Assume m=1.8 kg,M=3.1kg and the objects are wired together by very light, rigid pieces of wire. The array is rectangular and is split through the middle by the horizontal axis. $kg \cdot m^2$ (c) About which axis would it be harder to accelerate this array?