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对牛顿第一运动定律即惯性定律的物理意义,有些学生往往认识不足,很容易产生一些误解,以为牛顿第一运动定律定义了惯性和力,它是牛顿第二运动定律的特例,并无重要意义。其实,牛顿第一运动定律即惯性定律不仅是一条独立的物理定律,而且还是整个动力学的出发点,对它不做深刻的研究,就不能真正懂得整个牛顿力学体系。一、牛顿第一运动定律即惯性定律仅给出力的定性的定义牛顿第一运动定律即惯性定律,最早见诸于牛顿的名著《自
For Newton’s first law of motion, the physical meaning of the law of inertia, some students often lack understanding, it is easy to have some misunderstandings, in order to define the inertia and force for Newton’s first law of motion, it is a special case of Newton’s second law of motion, and it is not important significance. In fact, Newton’s first law of motion, inertial law, is not only an independent physical law, but also the starting point of the whole dynamics. Without a profound study on it, one cannot truly understand the entire Newtonian mechanics system. First, Newton’s first law of motion, ie, the law of inertia, only gives a qualitative definition of force. Newton’s first law of motion, ie, the law of inertia, was first seen in Newton’s masterpiece.