大学物理中的逻辑与方法——以落绳问题为例

LOGIC AND METHOD IN COLLEGE PHYSICS-TAKING ROPE-FALLING PROBLEM AS AN EXAMPLE

大学物理的教学,除了讲授知识点,也应讲清物理的逻辑与方法。本文以柔绳下落问题为例,分析了题目的多种解法,从而展示了质点系统动力学中的物理逻辑,即数理逻辑。这是一种沿着“物理现象的数学表达→数学推演→新结论→数学表达的物理图像”的脉络构建物理体系、推演新结论的方法。从物理的逻辑与方法讲解课程,也是课程思政的一个切入点,可以让学生学会物理的逻辑与思路、把握到物理和科学的基本思想。

In college physics teaching,in addition to teaching knowledge points,we should also clarify the logic and methods of physics.Taking the falling problem of a softrope as an example,this paper analyzes a variety of solutions to the problem to show that the physical logic in particle system dynamics,namely mathematical logic.It is the method of constructing physical theores and deducing new conclusions along the vein which starts from the mathematical expression of physical phenomena to mathematical deduction,then to new conclusion,and finaly to physical image of mathematical expression.Teaching courses by the logic and methods of physics is also an entry point of ideological and political education.Students can learn the logic and route of physics and grasp the basic ideas of physics and science.