[填空题]
Calculate the moment of inertia of the array of poin w2es zr;ebe+re-b-bxdz7o 59t objects shown in Fig. 8x5hy)u +,dnvil4w zk -–43+hkd,zvx) i nwl-uy 54 about (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?