[填空题]
Calculate the moment o)qrs*ejxh t 4-f inertx ue l;xhib5amg-ut/-txf (c*2o j i34ia of the array of point objects shown in Fig. 8–43 i *uuago -cbti5x 4e3f/ m(ljxx;-t2habout (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?