Enter the mass of the object and the cross-sectional area across the axis to determine the sectional density.
Sectional Density Formula
The follow formula is used to calculate a sectional density.
SD = M / A
- Where SD is the sectional density
- M is the mass of projectile
- A is the cross-sectional area
Sectional Density Definition
A sectional density is defined as the ratio of an object, typically a projectile or bullet, and the cross sectional area of the given axis. This is a mass per unit area while typical density is a mass per unit volume.
Sectional Density Example
How to calculate a sectional density?
- First, determine the mass of the projectile.
Measure the mass of the projectile.
- Next, determine the cross-sectional area.
Measure of calculate the cross-sectional area of the projectile.
- Finally, calculate the sectional density.
Calculate the sectional density using the formula above.
The sectional density of an M107 is .180 kg/cm^2.