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初二物理课本第一册第109页有一个研究液体内部压强与深度关系的学生实验。这个实验是用装有细砂的平底玻璃管,使它浮在水中不动,这时水对玻璃管底的压力与玻璃管本身(包括细砂)的重力相平衡,测量有关数据研究液体内部压强与深度的关系。在这个实验的操作过程中,很多学生都遇到玻璃管经常东倒西歪,很难竖直浮在水中的问题。很多学生由于不能使玻璃管竖直浮立水中,只好用手或其它东西扶正玻璃管,这样就大大影响了实验的准确程度。为了解决玻璃管竖直浮立的问题。现就其倾倒原因进行简单分
There is a student experiment on the relationship between internal pressure and depth of fluids in the second volume of the first physics textbook. In this experiment, a flat-bottomed glass tube with fine sand was used to make it float in water. At this time, the pressure of water on the bottom of the glass tube was balanced with the gravity of the glass tube itself (including fine sand). The relevant data were measured to study the interior of the liquid. The relationship between pressure and depth. During the course of this experiment, many students encountered the problem of glass tubes that often staggered and it was difficult to float vertically in water. Many students have to use their hands or other things to straighten the glass tube because they cannot float the glass tube vertically. This greatly affects the accuracy of the experiment. In order to solve the problem of vertical floating glass tube. Now simply divide the reason for its dumping