poundal

The poundal represents one choice, which is to rescale units of force.

The most common absolute units of force are the poundal, newton, and dyne.

In this sub-system, the unit of force is a derived unit known as the poundal.

Related units used in some distinct, separate subsystems of units include the poundal and the slug.

Also see pound-force, poundal and pound-mass.

The poundal is defined as the force necessary to accelerate 1 pound-mass to 1 foot per second per second.

The units of slug and poundal are designed to avoid a constant of proportionality in Newton's Second Law.

Another variant of the FPS system uses both the pound-mass and the pound-force, but neither the slug nor the poundal.

The basic objection is that atomic weight is not a weight, that is the force exerted on an object in a gravitational field, measured in units of force such as the newton or poundal.

An alternative unit of force in a different foot-pound-second system, the absolute fps system, is the poundal, defined as the force required to accelerate a one pound mass at a rate of one foot per second squared.

The term imperial should not be applied to English units that were outlawed in the Weights and Measures Act 1824 or earlier, or which had fallen out of use by that time, nor to post-imperial inventions such as the slug or poundal.