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1．根据“p=F/S”分析(或计算)液体的 压强和压力 例1 (2004年长沙 市)容积相同的甲、乙两 圆柱形容器都装满水,放 在水平桌面上．如图1所 示,则水对甲、乙两容器 底部的压力和压强大小关系分别是F四____ F乙,p甲____p乙(填“<“>”或“=”)． 分析:由题意分析知:甲、乙两个容器的横 截面积和高度都没有其确定的值．故我们要比 较甲、乙两容器底部所受的压强和压力就不能 直接用求液体内部压强和压力的常规方法 1．根据“p=F/S”分析(或计算)液体的 压强和压力 例1 (2004年长沙 市)容积相同的甲、乙两 圆柱形容器都装满水,放 在水平桌面上．如图1所 示,则水对甲、乙两容器 底部的压力和压强大小关系分别是F四____ F乙,p甲____p乙(填“<“>”或“=”)． 分析:由题意分析知:甲、乙两个容器的横 截面积和高度都没有其确定的值．故我们要比 较甲、乙两容器底部所受的压强和压力就不能 直接用求液体内部压强和压力的常规方法
1. According to “p=F/S” analysis (or calculation) of liquid pressure and pressure Example 1 (Changsha City, 2004) The same volume of cylindrical containers A and B are filled with water and placed on a horizontal table. As shown in Figure 1, the relationship between the pressure and the pressure at the bottom of the two vessels A and B is F ____ F B, p ____p B (fill “<”>“ or ”="). Analysis: According to the analysis of the questions, the cross-sectional areas and heights of the two vessels A and B have no definite value. Therefore, we must compare the pressure and pressure at the bottom of the two vessels A and B. Conventional methods of pressure 1. Analyze (or calculate) the pressure and pressure of a liquid according to “p=F/S”. Example 1 (Changsha City, 2004) Cylindrical containers of the same volume as A and B are filled with water and placed on level On the desktop, as shown in Figure 1, the relationship between the pressure and pressure at the bottom of the two water containers A and B is respectively F_____ F B, P_____p B (fill ’<’>’ or ’=’). . Analysis: It is known from the analysis of the questions that the cross-sectional areas and heights of the two vessels A and B have no determined values. Therefore, we must compare the pressures and pressures at the bottoms of the two vessels A and B. We cannot directly use the conventional method of calculating the internal pressure and pressure of the liquid.