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物体在传送带上的运动,涉及到的物理过程比较复杂,适用的规律跨度也很大,对于中学生来说,思维方面的要求极高.比如对受力分析的把握、牛顿定律的应用、参考系的选取、相对运动的分析、功能关系的理解等方面,要求学生的物理知识面要宽,纵向联系做到能深入浅出,横向联系做到能无缝链接.只有这样才能迅速准确的列出相关规律的方程,使问题得以顺利解决.笔者通过多年的教学实践发现,想做到这一点,在解题过程中,画出相关物理量的变化图象是一种行之有效的途径.下
Objects in the conveyor belt movement, involving the physical process is more complex, suitable for the law span is also great, for high school students, the thinking of the extremely demanding.For example, grasp the force analysis, the application of Newton’s law, the reference system The relative movement of the analysis, the understanding of the functional relationship, etc., require students to have a wide range of physical knowledge, vertical relations can be easy to understand, horizontal links can be seamlessly linked. The only way to quickly and accurately list the relevant laws Of the equation, so that the problem can be successfully resolved.The author found through years of teaching practice, want to do this, in the process of solving problems, draw the relevant physical changes in the image is an effective way.