Saturday, 28 July 2012

Pressure in liquids - II


The video shows an experiment of pressure in liquid increasing with depth.





Pressure in liquids

Water flows out in all directions
Pascal's Law - pressure exerted anywhere in a confined incompressible fluid is transmitted equally in all directions.

That is why when a glass vessel with holes is filled with water, the water will flow out in all directions.

















Pressure in liquids increases with depth and density.
The pressure of a liquid can be calculated using the formula below:

where: P is the pressure of the liquid
           ρ is density of the liquid
           g is gravitational field strength          
           h is the depth of the liquid


              http://en.wikipedia.org/wiki/Pascal's_law