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动态分析问题是考查学生分析、推理能力的重要题型,其问题可以涉及到力、电、热、光各部分知识,一直成为高考考查的热点内容。因此掌握分析这种问题的一般方法,在高三物理复习中有着举足轻重的地位。动态分析问题在力、电、热、光各部分知识中表现出来的形式和分析方法不尽相同,本文就动态分析问题在这些知识中表现的形式谈一些分析的方法,供师生在此问题的复习时作一个较为系统的参考。一、力学中的动态问题分析1.变动中力的平衡问题的动态分析①矢量三解形法物体在三个不平行的共点力作用下平衡,这三个
The dynamic analysis problem is an important question type that examines student’s analysis and reasoning ability. Its problems can involve the knowledge of each part of force, electricity, heat and light, and has always been a hot topic of the college entrance examination. Therefore, grasping the general method of analyzing this problem has a decisive position in the third year physics review. The forms and methods of analysis of dynamic analysis problems in the various parts of knowledge of force, electricity, heat, and light are not the same. This article discusses some analytical methods for the dynamic analysis of problems in the form of these knowledge representations for teachers and students in this issue. A more systematic reference is made during the review. 1. Analysis of Dynamic Problems in Mechanics 1. Dynamic Analysis of Force Balance Problems in Variations 1. Vector Three-decomposing objects are balanced by three non-parallel common point forces.