[填空题]
Calculate the momentw889dhhk0;zl:ua ham9fog e u2/ 9bxw of inertia of td -5ze6 wdajq;u9fy6vhb.j c 5he array of point objects shown in Fig. 8–43uv5d -cb.dywa;z h j69q f56je about
(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?