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The Foot-Pound-Second (FPS) System of Units

 

Description

Examples

Description

• 

The FPS system of units has the foot, pound, and second as its base units.  Unlike modern systems of units, composite dimensions are not necessarily represented by a product of powers of the base units. For example, the unit of power, the horsepower, is not equal to one square foot pound per cubic second.

• 

When used in conjunction with the UseSystem command, the FPS system sets the following units for the given dimensions.

Dimension Name

Unit Name

 

 

length

foot

mass

pound

time

second

plane angle

radian

solid angle

steradian

force

poundal

energy

poundal*foot

power

horsepower

pressure

poundforce/inch^2

Examples

Notes: 

– 

To enter a unit in 2-D Math input, select the unit from the appropriate Units palette. If the unit you want is not there, select unit and then enter the unit.

– 

When you edit a unit, double brackets appear around it.

UnitsUseSystem'FPS'

withUnitsStandard:

5'ft'2'pound''s'2

5lbft2s2

(1)

combine,'units'

5poundalfoot

(2)

's'

304810787315hp

(3)

'yard'2

59lbs3

(4)

See Also

Units

Units/Index

Units/Standard

Units/Systems

Units[UseSystem]