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在高中物理的学习过程中,学生会遇到许多有关三力平衡的问题,对于此类问题,解决的方法多是力的合成或分解法及正交分解法.但有些三力平衡问题还需要特殊的方法进行解决.本文主要介绍解决三力平衡问题的一些特殊方法.一、相似三角形法1.方法介绍在三力平衡问题中,如果有一个力是恒力,另外两个力方向都变化,且题目给出了空间几何关系,多
In high school physics learning process, students encounter many problems concerning the balance of three forces, and most of the solutions to such problems are force synthesis or decomposition methods and orthogonal decomposition methods. However, some three-force balance problems still require special Method to solve.This paper mainly introduces some special methods to solve the problem of three forces balance.First, the similar triangle method 1.Introduction of the method In the three forces balance problem, if there is a force is constant force, the other two force direction all changes, And the title gives the spatial geometry, and more