Marine & Nautical

Intermediate

Buoyant Force (Archimedes)

Upward force equals the weight of displaced water.

Formula

F_b = \rho g V

Variables

F_bBuoyant force (N)

ρWater density (kg/m³)

gGravity 9.81

VDisplaced volume (m³)

Example

V=2 m³ seawater (1025): F_b ≈ 20.1 kN

Did You Know?

Archimedes reportedly leapt from his bath shouting 'Eureka!' on discovering this principle.

marine buoyancy archimedes

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