[填空题]
Calculate the moment og e2hvdl(c:w8 -k ske1f inert3m 1xadshi6.rz 1. n1fe guxi)ia of the array of point objects shown in Fig. 8–43 abmhasi1) u3x.i gdnzrf .x 16e1out (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?