__Basic Concepts of Fluid Statics __

## Fluid Statics

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## Definition of Fluid Statics.

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## What is Fluid Statics?

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## Define Fluid Statics.

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## Describe Fluid Statics.

- Fluid Statics is the branch of Fluid Mechanics that studies the fluids at rest and the pressure in a fluid or exerted by a fluid on an immersed body.

- It is also called Hydrostatics.

## The Pressure of a Fluid

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## Definition of the Pressure of a Fluid.

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## What is the Pressure of a Fluid?

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## Describe the Pressure of a Fluid.

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## Define the Pressure of a Fluid.

- When a fluid is contained in a vessel, it exerts a force on the sides and bottom of the vessel due to its weight.

- The direction of pressure is always at a right angle to the surface.

- It is generally denoted by P.

- Its SI unit is Newton (N).

## Intensity of Pressure

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## Definition of Intensity of Pressure.

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## Define the Intensity of Pressure.

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## What is the Intensity of Pressure?

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## Describe the Intensity of Pressure.

- The pressure exerted by the liquid per unit area is called the Intensity of Pressure.

- It is also known as Unit pressure or Specific pressure.

- It is denoted by p.

- p= P/A

- where p = Intensity of Pressure

- P = Pressure acting on a surface

- A = area of the surface on which the pressure is acting

- The SI unit of Intensity of Pressure is N/m2.

- Generally, the Intensity of Pressure is referred to as Pressure.

## Pressure Head of a Liquid

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## Derive the expression for Pressure Head of a Liquid.

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## What is the Pressure Head of a Liquid?

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## Derive the formula for the Pressure Head of a Liquid.

- Suppose a tank of base area A filled with liquid up to height h.

- P = Specific weight of liquid * Volume of liquid

- P = wAh

- The intensity of pressure (p) is:-

- p = P/A

- p = wAh/A

- p = wh

- Since, p = wh. This shows that the intensity of pressure varies with the depth of liquid since the specific weight of the liquid is constant.

- When the pressure is expressed in terms of the height of the liquid, then, that height of the liquid is referred to as the pressure head.

- Pressure head (h) = p/w

- It is generally measured in mm or cm or m of the liquid column.

*Self Typed

*Source- Books, Internet, Self-Analysis