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物体平衡是力学的基础,它往往涉及力的概念、受力分析、力的合成与分解等多方面的物理知识和方法,其中比较突出的有三类平衡问题:动态平衡问题、临界问题、极值问题.本文以实例对这三类平衡问题进行讨论.1.动态平衡在有关物体平衡问题中,存在着大量的动态平衡问题,所谓动态平衡是指物体在运动中的平衡,它是通过控制某一物理量,使物体的状态发生缓慢变化,在此过程中,物体始终处于一系列的动态平衡状态.这类问题具有一定的综合性和求解的灵活性,可以充分考查同学们分析问题、解决问题的能力.
Object balance is the basis of mechanics. It often involves the physical concepts and methods of force analysis, force synthesis and decomposition, etc. Among them, there are three kinds of balance problems that are outstanding: dynamic equilibrium problem, critical problem, extreme value Problem.This paper discusses the three types of balance problems by examples.1 Dynamic Balance There are a lot of dynamic balance problems in the object balance problem, the so-called dynamic balance refers to the balance of the object in motion, it is through the control of a A physical quantity, the state of the object changes slowly, in the process, the object is always in a series of dynamic equilibrium. Such problems have a certain degree of comprehensiveness and flexibility of solution, you can fully examine the students analyze the problem and solve the problem Ability.