[填空题]
Calculate the moment of inertia of the array of point objects shown5rajmc a jrs q(av07lvg8 65)e in Fig. 8fsxcc;rq 6 j78–43 aboc ;7x68q rcfjsut (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?