[填空题]
Calculate the moment of inertia of the array of poin)3o uh hz27vtkt objec-v: -b3wmkj fwrbzo-ztaqk6 q.x4)- bts shown in Fig. 8–43 aboq :awz3obzbk-4 twv6xj-q rk-f-.)mbut (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?