Base |
force, length, time | weight, length, time | mass, length, time | |||||
---|---|---|---|---|---|---|---|---|
Force (F) | F = m·a = w·ag | F = m·ag_{c} = w·ag | F = m·a = w·ag | |||||
Weight (w) | w = m·g | w = m·gg_{c} ≈ m | w = m·g | |||||
System | BG | GM | EE | M | AE | CGS | MTS | SI |
Acceleration (a) | ft/s^{2} | m/s^{2} | ft/s^{2} | m/s^{2} | ft/s^{2} | gal | m/s^{2} | m/s^{2} |
Mass (m) | slug | hyl, also called “metric slug” or “TME” | lb_{m} | kg | lb | g | t | kg |
Force (F) | lb | kp | lb_{F} | kp | pdl | dyn | sn | N |
Pressure (p) | lb/in^{2} | at | PSI | atm | pdl/ft^{2} | Ba | pz | Pa |
Documentation
This table previously included rows that provided common labels or descriptions for the three approaches, i.e.
- technical (force column),
- gravitational (force or weight column),
- engineering (force or weight column),
- colloquial (weight column),
- pre-newtonian (weight column),
- absolute (mass column, also force column),
- scientific (mass column),
- coherent (force and mass columns),
- incoherent (weight column).
This was deemed inappropriate and should be discussed in surrounding prose where necessary.
Parameter system
Base |
force, length, time | weight, length, time | mass, length, time | ||
---|---|---|---|---|---|
Force (F) | F = m·a = w·ag | F = m·ag_{c} = w·ag | F = m·a = w·ag | ||
Weight (w) | w = m·g | w = m·gg_{c} ≈ m | w = m·g | ||
System | GM | M | CGS | MTS | SI |
Acceleration (a) | m/s^{2} | m/s^{2} | gal | m/s^{2} | m/s^{2} |
Mass (m) | hyl, also called “metric slug” or “TME” | kg | g | t | kg |
Force (F) | kp | kp | dyn | sn | N |
Pressure (p) | at | atm | Ba | pz | Pa |
Base |
force, length, time | weight, length, time | mass, length, time |
---|---|---|---|
Force (F) | F = m·a = w·ag | F = m·ag_{c} = w·ag | F = m·a = w·ag |
Weight (w) | w = m·g | w = m·gg_{c} ≈ m | w = m·g |
System | British Gravitational (BG) | English Engineering (EE) | Absolute English (AE) |
Acceleration (a) | ft/s^{2} | ft/s^{2} | ft/s^{2} |
Mass (m) | slug | lb_{m} | lb |
Force (F) | lb | lb_{F} | pdl |
Pressure (p) | lb/in^{2} | PSI | pdl/ft^{2} |
- ↑ ^{1.0} ^{1.1} ^{1.2} Lindeburg, Michael, Civil Engineering Reference Manual for the PE Exam
- ↑ ^{2.0} ^{2.1} ^{2.2} Wurbs, Ralph A, Fort Hood Review Sessions for Professional Engineering Exam, http://engineeringregistration.tamu.edu/tapedreviews/Fluids-PE/PDF/Fluids-PE.pdf, retrieved October 26, 2011
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