[填空题]
Calculate the moment of inertia 6 (* 9kfnnk9v*vuolqgof the array ogwxvkx -z4w pw 53 ;f+xdzj6:af point objects shown in Fig. 8–43 about35d4z:ww xj;v-xa pw +z gkx6f (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?