# Buoyancy

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

## Buoyancy

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

### Buoyancy formula

$$\large{ B = p A }$$

$$\large{ B = \rho V g }$$

$$\large{ B = \rho g h A }$$

Where:

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

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

$$\large{ g }$$ = gravity, $$\;9.8 m/s^2$$

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

$$\large{ p }$$ = pressure

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

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