Definition:FPS/Force

Definition

Various FPS units of force which have specific names are as follows:

Poundal

The poundal is an FPS unit of force.

It is defined as being:

The amount of force required to accelerate a mass of one pound at a rate of one foot per second squared.

\(\ds \)

\(\)

\(\ds 1\)

poundal

\(\ds \)

\(\approx\)

\(\ds 0 \cdotp 13825 \, 5\)

newtons

Pound Force

The pound force is a FPS unit of force.

It is defined as being:

The gravitational force exerted on a mass of one avoirdupois pound on the surface of Earth.

In this context, the value of the standard acceleration due to gravity is used, taken to be $32.17404 \, 9 \, \mathrm {ft} \, \mathrm s^{-2}$.

\(\ds \)

\(\)

\(\ds 1\)

pound force

\(\ds \)

\(=\)

\(\ds 32 \cdotp 17404 \, 9\)

poundals

\(\ds \)

\(\approx\)

\(\ds 4 \cdotp 44822\)

newtons

Ton Force

The ton force is a FPS unit of force.

It is defined as being:

The gravitational force exerted on a mass of one ton on the surface of Earth.

In this context, the value of the standard acceleration due to gravity is used, taken to be $32.174049 \, \mathrm {ft} \, \mathrm s^{-2}$.

\(\ds \)

\(\)

\(\ds 1\)

ton force

\(\ds \)

\(\approx\)

\(\ds 9964\)

newtons