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受力分析个数的判断对于高中学生是个难点,原因是学生面对复杂的受力情况时无法通盘考虑,分析不够周密。在受力分析中使用表格可以帮助学生建立复杂的受力因素之间的联系,使得物体与物体、力与力之间的关系简单直观。笔者在实际的教学中发现在受力分析中使用表格可以大大提高受力分析的准确性。本文讲述表格的作用以及如何在分析受力个数的过程中使用表格。
The judgment of the number of force analysis is a difficult point for high school students because the students can not consider them in the face of complex force situations and the analysis is not thorough enough. The use of tables in stress analysis can help students to establish a complex relationship between forces, making the relationship between objects and objects, forces and forces simple and intuitive. The author found in the actual teaching in the force analysis using the table can greatly improve the accuracy of stress analysis. This article describes the role of tables and how to use tables in the analysis of stress levels.