Physics
Describe an experiment to show that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
Answer
The experiment is described below:
- Take a glass tube open at both ends. Hold it vertically.
- Tie a balloon at its lower end.
- Pour some water in the tube.
- Balloon starts bulging out as shown in figure (a) above.
- Add more water in the tube.
- Balloon will bulge more as shown in figure (b) above.
Conclusion — From the above experiment it is concluded that when the height of the water column increases, more pressure is exerted on the balloon and it bulges out more. This shows that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
Related Questions
Describe a simple experiment to show that at a given depth, a liquid exerts same pressure in all directions.
Which fact about liquid pressure does the diagram in figure below illustrate?
State two factors on which the pressure at a point in a liquid depends.
Describe an experiment to show that liquid pressure depends on the density of liquid.