Physics Laws & Theorems
Intermediate

Archimedes' Principle

Buoyant force equals the weight of fluid displaced.

Formula

Fb=ρgVF_b = \rho g V

Variables

\rhoFluid density
gGravity
VDisplaced volume

Example

A 1000 cm³ object submerged in water feels an upward buoyant force of about 9.8 N.

Did You Know?

Archimedes reportedly leapt from his bath shouting "Eureka!" upon discovering buoyancy.

buoyancyfluidsarchimedesprinciple