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人教版八年级物理教材《液体压强》一节,为说明液体对容器侧壁有压强。编者引入了在矿泉水瓶侧面不同高度打孔,通过观察液体能从容器侧壁的孔中喷出的现象来说明液体对容器侧壁有压强。但一些师生容易根据这一观点,顺势引申出:液体深度越深、喷射越远、压强越大的结论,这个结论对还是不对?该文将通过理论分析和实验展示对该问题进行重新阐述。
PEP eighth grade physics textbook “Liquid Pressure” section to illustrate the pressure of liquids on the side walls of containers. The editor introduced perforations at different heights on the side of the mineral water bottle, indicating that the liquid has a pressure on the side walls of the container by observing that liquid can be ejected from the holes in the side walls of the container. However, according to this view, some teachers and students easily take advantage of the fact that the more liquid depth, the more distant the jet, the greater the pressure. Is this conclusion right or not? This article will re-explain the problem through theoretical analysis and experimental demonstration .