Archimedes' Principle

The Archimedes’ Principle : The Archimedes’ Principle A body immersed wholly or partially in a fluid is buoyed by a force that is equal to the weight of the fluid displaced.

Verification : Verification

A Hydrogen filled balloon released in air goes up !! : A Hydrogen filled balloon released in air goes up !! Hydrogen is lighter than air. Its density is less than air. When in air , the balloon displaces certain amount of air. The weight of air displaced by balloon is more than the weight of the balloon. In other words, the buoyant force is more than the weight of the balloon. Hence the balloon rises in the air.

Swimmer feels lighter !! : Swimmer feels lighter !! When a person is in a pool to enjoy swimming, he displaces water. Weight of water displaced by him constitutes buoyant force. The buoyant force acts vertically upwards. Hence the swimmer feels lighter.