[填空题]
Calculate the moment q248ozgyp4t:wt 7 l ftof iyy2 +77gkw ib 6tgy*pn/zc3tlnertia of the array of point objects shown in Fig. 8–43 atggiptb7y/nzl3 w2 * +y6y7c kbout (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?