[填空题]
Calculate the moment of inertia of ;)r ul/ vimvc+cb pe)9the arhsbm q+rxuh1e: -n1 i/ray of point objects shown in Fig. 8–431ie+ hq x/ru -nh1smb: 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?