Inertance

Inertance is the ratio of an acceleration-like quantity to a force-like quantity when the arguments of the real (or imaginary) parts of quantities increase linearly with time.

Acoustics

Describes the inertial properties of a gas in a duct.

where

L = inertance [kgm^-4]

ρ₀ = density of the gas [kgm^-3]

Δx = incremental distance [m]

A = cross-sectional area [m²]