[填空题]
Calculate the moment of oavmy g.uk1n)l1nu1d*,-o i f/58gew2e zit9 u4e hb:wfs +qoinertia of the array of point objects shown in Fig. 8–43 aqbfo tw ug8 5i 4s2z/heee:w9+bout (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?