中学物理力学部分既是重点也是难点。学生遇到有关力学的复杂问题时,往往受到思维定势的影响,思路狭窄,甚至半途而废。因此,引导学生从多角度、多方面分析思考问题,灵活地转换思维方法,对寻找最佳的解题思路是很必要的。下面两道例题让我们体会一下像简谐振动这些不常用的规律, The physical and mechanical part of middle school is both important and difficult. When students encounter complex problems related to mechanics, they are often affected by the tendency of thinking and thinking. They have narrow ideas and even halfway. Therefore, it is necessary to guide students to analyze and think from multiple angles and in many aspects, and to flexibly switch their thinking methods to find the best ideas for solving problems. The following two examples allow us to understand some of the less common laws like harmonic vibrations.