What is Buoyancy in Physics? | Definition, Formula, Examples, Types – Hydrostatics

Buoyancy Definition Physics:
When a body is partially or fully immersed in a fluid, an upward force acts on it, which is called buoyant force, the phenomena is called buoyancy.

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What is Buoyancy in Physics? | Definition, Formula, Examples, Types – Hydrostatics

The buoyant force acts at the centre of gravity of the liquid displaced by the immersed part of the body and this point is called the centre of buoyancy.

The Magnitude of Buoyant Force Formula:
The magnitude of buoyant force, F = uρg.

Buoyancy is caused by the differences in pressure acting on opposite sides of an object immersed in a static fluid. It is also known as the buoyant force.

3 Types Buoyancy:
The three types of buoyancy are,

  • Positive buoyancy
  • Negative buoyancy
  • Neutral buoyancy.

Buoyancy Examples in Real Life

  • A boat or a ship floating in water is an example of buoyancy.
  • Immersing a cork in water will result in floating of it on the surface and this is because of the buoyancy.
  • An example of buoyancy is when salt water has the ability to help things float.
  • An example of buoyancy is a cheerful person who is grateful for her job and who is generally happy and optimistic.

Hydrostatics is a property of liquid or fluid in mechanics. A fluid is a material which flows at room temperature, because its upper molecule overlaps the inner molecule, which tends to flow the liquid in forward direction. In hydrostatics, we will learn about the condition of fluids when it is in rest or exerted by an external force. Here we will study the fluids in motion.

Properties of Fluids Thrust
Pressure Pressure Exerted by Liquid
Buoyant Force Pascal’s Law
Archimedes’ Principle Law of Floatation
Density Relative Density
Density of a Mixture