压强动态变化类问题是近几年出现的题目,能较好考查学生运用压强知识灵活分析、解决问题的综合能力,下面对此类问题进行归类、分析.一、液体类例1(2008年上海)如图1所示,两个底面积不同的圆柱形容器甲和乙,容器足够高,分别盛有质量相等的水和酒精(ρ水>ρ酒精),可能使水和酒精对容器底部的压强相等的方法是() The problem of dynamic change in pressure is a subject that has emerged in recent years. It can better examine students’ comprehensive ability to analyze and solve problems flexibly using pressure knowledge. The following is a classification and analysis of such problems. Year Shanghai) As shown in Figure 1, two cylindrical containers A and B with different bottom areas are high enough to contain equal masses of water and alcohol (p-water> ρ-alcohol), respectively, The bottom of the pressure equal to ()