[填空题]
Calculate the moment of inertia of hz;y05 9,kp8 lalpb ksthpnnsl3 )( v3,x xv)oy hex- ys6+;3uurpw7aj ze array of point objects shown in Fig. 8–43 3x3z spp6nj3urnuea +y xso x)h;-vw ),v(y7labout (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?