Activity: To show that liquid exerts equal pressure in all the direction at a given depth.

Theory: Pressure is force per unit area. At any point in a fluid, the pressure is the same in all directions.

P = gh, where

Ø P is the water pressure at a particular depth

Ø g is the acceleration due to gravity

Ø h is the depth of the water at that point

Materials Required: A plastic bottle, hammer, and nail, ruler

Experiment:

Ø Make holes of the same size on the bottle with the help of hammer and nail.

Ø Make sure that the holes should be at the same distance from the bottom surface.

Ø Now fill the bottle with water.

Ø Measure the distance from the bottle to the distance up to which the water comes out.

Conclusion: We will notice that the distance covered by the water coming out of the holes is equal. This implies that the pressure of the liquid at given depth is the same.