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有些物理问题依据其题意所遵循的物理规律列出的方程式或方程组很难求解,甚至根本不能求解,此类问题多数会出现在数据型选择题当中。对于这类问题我们可以采用反代法进行巧解,请例看1下面例题。如图1所示,在光滑水平面上有三个完全相同的小球排成一条直线。2、3小球静止且靠在
Some physics problems are difficult to solve based on the equations or equations listed in the physical laws followed by their questions, or even not solved at all, and most of these problems will appear in data type multiple-choice questions. For this type of problem, we can use the anti-generation method to solve the problem. For example, see the following example. As shown in Figure 1, three identical balls are arranged in a straight line on a smooth horizontal surface. 2, 3 balls are stationary and leaning