# Archimedes Principle

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Archimedes principle is the upward bouyancy force that is extended on a body that is completely or partially immersed in a fluid and is equal to the weight of the fluid that the body displaces.

## Archimedes's principle formula

$$\large{ B = \rho \; g \; V }$$
Symbol English Metric
$$\large{ B }$$ = buoyancy $$\large{lbf}$$ $$\large{N}$$
$$\large{ \rho }$$  (Greek symbol rho) = density of fluid $$\large{\frac{lbm}{ft^3}}$$ $$\large{\frac{kg}{m^3}}$$
$$\large{ g }$$ = gravitational constant $$\large{\frac{lbf-ft^2}{lbm^2}}$$  $$\large{\frac{N -m^2}{kg^2}}$$
$$\large{ V }$$ = volume of solid $$ft^3$$ $$m^3$$