Poundal

poundal
Unit systemAbsolute English System
Unit ofForce
Symbolpdl
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.

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.

  1. ^ 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.