Variants
Collectively, the variants of the FPS system were the most common system in technical publications in English until the middle of the 20th century.
Errors can be avoided and translation between the systems facilitated by labelling all physical dimensions consistently with their units. Especially in the context of the FPS system this is sometimes known as the Stroud system after William Stroud, who popularized it.
| Base | force, length, time | weight, length, time | mass, length, time | |||||
|---|---|---|---|---|---|---|---|---|
| Force (F) | F = m·a = w·a/g | F = m·a/gc = w·a/g | F = m·a = w·a/g | |||||
| Weight (w) | w = m·g | w = m·g/gc ≈ m | w = m·g | |||||
| System | BG | GM | EE | M | AE | CGS | MTS | SI |
| Acceleration (a) | ft/s2 | m/s2 | ft/s2 | m/s2 | ft/s2 | Gal | m/s2 | m/s2 |
| Mass (m) | slug | hyl | lbm | kg | lb | g | t | kg |
| Force (F) | lb | kp | lbF | kp | pdl | dyn | sn | N |
| Pressure (p) | lb/in2 | at | PSI | atm | pdl/ft2 | Ba | pz | Pa |
Read more about this topic: Foot-pound-second System
Famous quotes containing the word variants:
“Nationalist pride, like other variants of pride, can be a substitute for self-respect.”
—Eric Hoffer (1902–1983)