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《中学物理》第24卷第21期(06年11月)有一篇《摩托车起动时为什么车头上抬、车尾下沉》的文章,作者是用质心运动定理和对质心轴的转动定理的知识来讨论的.读后我想到了用另外一种方法来讨论,那就是引入惯性力,以非惯性系作为参考系来描述物体的运动时,只要设想物体在通常所受的作用力之外,还受到一个与加速度方向相反的惯性力F惯=ma 的作用,那么解答一切动力学的步骤与惯性系中相同.下面从这个角度来具体的分析为什么摩托车起动时车头上抬、车尾下沉.
“Secondary Physics”, Vol. 24, No. 21 (November 2006) has an article entitled “Why the Front Lifts When the Motorcycle Starts, and the Sunken Side of the Tail”. The author uses the center of mass movement theorem and the rotation theorem of the mass axis. Knowledge is discussed. After reading, I thought of another way to discuss, that is to introduce the inertia force, and use the non-inertial system as the reference system to describe the movement of the object, as long as the object is assumed to be outside the usual force. The inertial force F inertia=ma, which is opposite to the direction of the acceleration, is the same as the inertial system. The following is a detailed analysis from the perspective of why the front of the motorcycle is raised when the motorcycle is started. sink.