What is archimedian law of buoyancy?


Archimedes’s law of buoyancy states that when a body is placed in a fluid gas or liquid it loses some weight. so we are partially submerged in air what is the amount of air displaced; because the amount of fluid displaced is equal to the weight lost; so how much weight are we losing.

Definition of Archimedes’s law

Archimedes’ principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether partially or fully submerged, is equal to the weight of the fluid that the body displaces and acts in the upward direction at the center of mass of the displaced fluid.

Formula of Archimedes Principle

The Archimedes law says that the buoyant force on an object equals the weight of the fluid displaced by the object.

Fb = ρ x g x V


  • Fb is the buoyant force
  • ρ is the density the fluid
  • V is the submerged volume
  • g is the acceleration due to gravity


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