[填空题]
Calculate the moment of iner k-ugr/s. l da. g;*lv:8qt1qdua i)mdtia of the array of point objes)4-mt )dkb+w*oycuz cts shown in Fig. 8–43 abouz- )4moy+bcwsk*du) tt (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?