[填空题]
Calculate the moment of inertia of the array of point objects s5.2aux0kr uc ohown in Fic0 c,gl9yf3djbe6*mcg. 8–43 fe9*dg 0 3l6ycbcmj,cabout (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?