[填空题]
Calculate the moment of inertia of the imsg4djdd y8;r4ps g;f0 p/ -marray of point objects shown vj 8/lwb7;u)2yno bd kin Fig. 8–43 abouylvu8b/nk2)wbd7 j; ot (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?