[填空题]
Calculate the moment of inertia of t gkh5 nwnj ,od+i0n: t6i*gve.he ;e6xj+)uuqe 4 mrtmca)nkkhb s )9m6; l-4ygmarray of point objects shown in Fig. 8–43 e m ; uts4 96g 6bm4hq;-uymmnjk)erkc)al+x)about (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?