# Buoyancy

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Buoyancy is when a liquid applies upward force on an object that is completely submerged or floating.

### Buoyancy formula

(Eq. 1)  $$\large{ B = p A }$$

(Eq. 2)  $$\large{ B = \rho V g }$$

(Eq. 3)  $$\large{ B = \rho g h A }$$

Where:

$$\large{ B }$$ = buoyancy force

$$\large{ A }$$ = surface area of object

$$\large{ \rho }$$ (Gtrrk symbol rho) = density of the fluid

$$\large{ g }$$ = gravity

$$\large{ h }$$ = height of liquid displaced by a floating object

$$\large{ p }$$ = pressure

$$\large{ V }$$ = displaced volume