What is Archimedes' Principle?

Archimedes' Principle:

• Statement: When a body is fully or partially immersed in a fluid at rest, it experiences an upward buoyant force equal to the weight of the fluid displaced by it.
• Formula: F_buoyant = ρ × V × g (where ρ is fluid density, V is displaced volume, g is gravity).
• Applications: Designing ships, submarines, hydrometers, and lactometers.