- Liquid has its own weight, this causes pressure on the wall of the container in which liquid is held, it also causes pressure on any object immersed in the liquid”.
Enrich Your Learning:
Properties of Liquid:
- One of the most important properties of liquids is that they exert pressure in all directions.
- Other important properties of liquids are
(i) Pressure increases with depth.
(ii) Pressure is the same at all points at the same depth.
(iii) Liquid seeks its own level.
- When filled in a container, the water rushes out with the great force from the hole at the bottom, with less force from the hole at the centre and with least force from the hole at the top.
- This shows that pressure increases with depth. The concept of pressure increasing with depth is used while constructing the dams.
- The dams are constructed by making the walls usually larger at the bottom than at the top in order to help withstand the pressure.
- While fountains work due to the pressure exerted by water on the walls of the pipe.
- Liquid pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it. We calculate liquid pressure using the equation liquid pressure = mass x acceleration due to g density x depth in fluid.