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读了贵刊2004年第8期(上半月P.37)邓洪老师的文章《摩托车为何要倾斜》(以下简称《邓文》),该文解法简捷,读后颇有收获。但文中有:“……为了平衡,摩托车就必须向内倾斜一个角度,使重力、弹力、摩擦力对任一转轴的力矩之和为零。……”这一句值得商榷。我们知道摩托车在水平路面上转弯时是做圆周运动,而做圆周运动的物体处于非平衡状态,合外力不等于零,也不会对空间任一转轴力矩平衡。
After reading the article “Why Motorcycles Should Tilt” (hereinafter referred to as “Deng Wen”) by Deng Hong teacher in the 8th issue of the magazine (first half month P.37), the solution of this article is simple and straightforward. But the text has: “... In order to balance, the motorcycle must be tilted inward at an angle so that the sum of the moments of gravity, spring force, and friction on either axis is zero....” This sentence is debatable. We know that when a motorcycle turns on a horizontal road, it makes a circular motion, and the object that makes a circular motion is in a non-equilibrium state, and the external force is not equal to zero, and it does not balance the moment of any axis in the space.