# Lift Force

on . Posted in Fluid Dynamics

Lift force, abbreviated as L, for an body moving through a fluid (gas or liquid) or air, is the force exerted perpendicular to the direction of travel.

## Lift Force formulas

$$\large{ L = \frac{1}{2} \; C_l \; \rho \; v^2 \; A }$$

$$\large{ L = \frac{ C_l \; \rho \; v^2 \; A }{ 2 } }$$

Symbol English Metric
$$\large{ L }$$ = lift force $$\large{ lbf }$$ $$\large{N}$$
$$\large{ A }$$ = area $$\large{ ft^2 }$$ $$\large{ m^2 }$$
$$\large{ \rho }$$  (Greek symbol rho) = density  $$\large{\frac{lbm}{ft^3}}$$ $$\large{\frac{kg}{m^3}}$$
$$\large{ C_l }$$ = lift coefficient $$\large{ dimensionless }$$
$$\large{ v }$$ = velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$