Question

Explain the Archimedes principle with an example.

Answer 1

Principle:
A body immersed in fluid experiences a vertical upward buoyant force equal to the fluid it displaces.

Explanation:

1. When a body is partially or completely immersed in a fluid at rest, it experiences an upthrust that is equal to the weight of the fluid displaced by it.
2. Due to the upthrust, the body loses a part of its weight equal to upthrust.
   Upthrust = Weight of the fluid displaced.
   = Apparent loss of weight of the body.
   Apparent weight of an object = True weight of object in air – upthrust.