[填空题]
Calculate the moment of inertia of the array of point sruv0 ;/v h *jnnex.+1ec4ycl3 1sjmlo,ifs(ejwf,; z -ufe1l bjects shown in Fig. 8–43 abzie ,je 1lw-f(s; f,ufout (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?