Pressure in fluids

Beschreibung

A force acting normally on a surface is called thrust
Kanika Pandya
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Kanika Pandya
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Zusammenfassung der Ressource

Pressure in fluids

Anmerkungen:

  • Thrust A force acting on a surface is called thrust. Measured in dynes in CGS system and newtons in SI system.
  • Pressure The force acting normally on unit surface area is called pressure.
  1. Thrust A forever acting normally on a surface is called thrust. Measured in dynes in CGS system and newtons in SI system.
    1. Pressure The force acting normally on a surface area is called pressure.
      1. Pressure = Thrust upon Area
        1. Pressure is a scalar quantity.
          1. Unit of pressure When a force of 1N acts normally on an area of 1 sq.m , then the pressure acting on that surface is called 1 pascal.
          2. Fluids Any substance which has no fixed shape and can follow is called fluids
            1. The momentum imparted per second by the molecules to a given surface gives rise to average force acting on the surface. This average force acting per unit area gives rise to fluid pressure
            2. Factors on which the pressure at a point in fluid depends.
              1. Pressure in fluids is directly proportional to its height (or depth)
                1. Pressure in a fluid is directly proportional to its density
                  1. Pressure in a fluid is directly proportional to the acceleration due to gravity.
                    1. Pressure in a fluid is independent if the area of cross section.
                    2. Laws of fluid pressure
                      1. Pressure at a point inside the liquid increases with the depth from the free surface of the liquid.
                        1. Pressure at a point inside the liquid at a given depth increases with the increase in the density of the liquid.
                          1. Pressure is same in all directions, about a given point within the liquid
                            1. Pressure is same at all points in horizontal plane at a given depth in a stationary liquid
                              1. A liquid seeks its own level
                              2. The force exerted by the air on a unit surface area is called atmospheric pressure.
                                1. Measured using barometer
                                  1. Fortin's Barometer
                                    1. Mercury Barometer
                                      1. Aneroid Barometer
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