[填空题]
Calculate the moment of inertia of the so 7dr /lf y0oxk/vc((ay;qj:s7 g:ejepoy5-nd86u rx rray of point objects shown in Fig. 8–43 about6x8 yd o-q:g:7;njese uyr 5jp (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?