[填空题]
Calculate the moment a1va7 8o gof r/ ckd4-pq4 vcq-uj6aqz rmj137of inertia ofvs+fv8n86eikuf* fb 5 the array of point objects shown in Fig. 8–43 abouff*+6svb85 kfun8vi et (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?