Drag Force Calculator

Formula

The formula to calculate the drag force is:

\[ \text{F} = \frac{1}{2} \rho v^2 A c_d \]

Where:

\( \text{F} \) is the force due to drag
\( \rho \) is the density of the fluid the object is moving through
\( v \) is the velocity of the object
\( A \) is the cross-sectional area
\( c_d \) is the drag coefficient

Example Calculation

Let's consider an example:

Density of Fluid (ρ): 1.225 kg/m³
Velocity of Object (v): 30 m/s
Cross-Sectional Area (A): 2 m²
Drag Coefficient (cd): 0.5

Using the formula to calculate the drag force:

\[ \text{F} = \frac{1}{2} \times 1.225 \times 30^2 \times 2 \times 0.5 = 0.5 \times 1.225 \times 900 \times 2 \times 0.5 = 551.25 \text{ N} \]

This demonstrates that with a fluid density of 1.225 kg/m³, a velocity of 30 m/s, a cross-sectional area of 2 m², and a drag coefficient of 0.5, the drag force is approximately 551.25 N. ✅