[填空题]
Calculate the moment of inerkf c71c(osp v9tia o 7o5m9 jxcw;;iooaoa -f the array of point objects shown in Fig. 8–43 a7o5ci om9w;;aao-o x jbout (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?