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最近,关于筒内水面上的油层是否受到浮力的问题在本刊展开了讨论。本文就液体内压强的机理和浮力等问题,谈谈笔者的看法,以与同行商讨。一、液体的压强是分子斥力的作用现行初中《物理》课本写道:“液体因为有重量,所以对容器的底部要产生压强。”并用实验证明了液体对侧壁和液体内部均有压强,这有利于初中学生理解和接受液体内压强的概念。液体是介于气体与固体之间的一种物质形态,它既具有一定的体积、不易压缩,又
Recently, the issue of whether or not the oil layer on the water surface inside the cylinder is subject to buoyancy has been discussed in this issue. This article discusses the author’s views on the mechanism of fluid pressure and buoyancy and other issues to discuss with the peers. First, the liquid pressure is the role of molecular repulsion The current junior high school “Physics” textbook wrote: “The liquid because of weight, so the pressure on the bottom of the container.” And experimentally proved that the liquid pressure on both the side wall and the liquid inside, This is helpful for junior high school students to understand and accept the concept of liquid pressure. Liquid is a material form between gas and solid. It has a certain volume and is not easy to compress.