Total Energy of a Liquid | Pressure, Kinetic, Potential Energy – Hydrodynamics
We are giving a detailed and clear sheet on all Physics Notes that are very useful to understand the Basic Physics Concepts.
Energy of a Liquid
A liquid in motion possess three types of energy
(i) Pressure Energy
Pressure energy per unit mass
= \(\frac{p}{\rho}\)
where, p = pressure of the liquid
and ρ = density of the liquid.
Pressure energy per unit volume = p
Pressure Energy SI Unit
SI unit of pressure energy is Joule(J).
(ii) Kinetic Energy
Kinetic energy per unit mass
= \(\frac{1}{2}\) v²
Kinetic energy per unit volume
= \(\frac{1}{2}\) ρv²
Kinetic Energy Units:
The SI unit of kinetic energy is Joule
The CGS unit of kinetic energy is erg.
(iii) Potential Energy
Potential energy per unit mass =gh
Potential energy per unit volume = ρgh
Potential Energy Unit:
The SI unit of kinetic energy is Joule.
Hydrodynamics:
In physics, hydrodynamics of fluid dynamics explains the mechanism of fluid such as flow of liquids and gases. It has a wide range of applications such as evaluating forces and momentum on aircraft, prediction of weather, etc.