[填空题]
Calculate the moment r r.3-ns0s5 sloa8 ytuof inertia of the array y mf( 3)io qepmqyblkz3wgts6+r4:il5;mo- , of point objects shown in Fig. 8–43 abou65iqm)433, m ypk+wb;ot(f-s: i qroyml elg zt (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?