Poundal

poundal
poundal
Unit system	Absolute English System
Unit of	Force
Symbol	pdl
Conversions
1 pdl in ...	... is equal to ...
AE base units	1 lb⋅ft/s2
SI units	0.1382550 N
CGS units	13,825.50 dyn
British Gravitational System	0.03108095 lbf

The poundal (symbol: pdl) is a unit of force, introduced in 1877, that is part of the Absolute English system of units, which itself is a coherent subsystem of the foot–pound–second system.

1\,{\text{pdl}}=1\,{\text{lb}}{\cdot }{\text{ft}}/{\text{s}}^{2}

The poundal is defined as the force necessary to accelerate 1 pound-mass at 1 foot per second squared.^[1]^: 54 1 pdl = 0.138254954376 N exactly.

^ Cardarelli, François (2003), "The Foot–Pound–Second (FPS) System", Encyclopaedia of Scientific Units, Weights and Measures: Their SI Equivalences and Origins, Springer, pp. 51–55, ISBN 978-1-85233-682-0.