Pressure in Liquid
Pressure in Liquid
The fluid of the vessel creates Pressure due to its weight. Pressure in liquid is proportional to depth. The pressure in fluid increases with depth.
Theory of Pascal
The pressure applied to a part of a fluid in a bound fluid is normally transmitted to each part of the fluid this can be explained in many ways.
(1.) The pressure exerted at any point of an attached fluid is uniformly transmitted in all directions.
(2.) The pressure difference between the 'non compressible fluid' surrounded by a vessel is transmitted to the wall of the liquid and vessel without changing it.
(3.) If we reject gravity then the pressure at all points of the liquid will be the same in the state of rest.
Archimedes' Theory
This theory states that whenever an object is fully or partially immersed in a fluid, the reduction in its load is equal to the weight of the fluid displaced by the upper thrust. when an object is immersed .
in a fluid, two types of force work.
(1.) The weight of the object acts in a downward direction through the center of the object.
(2.) The upper thrust (U) acts upward through the center of gravity of the object. Due to the upper thrust, the weight of the object is reduced when is it submerged in the fluid.
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