Convert attonewton [aN] to poundal [pdl] Online | Free force Converter

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Attonewton [aN]


Attonewton is an extraordinarily small unit of force in the International System of Units (SI).



  • 1 attonewton (aN) equals 10−1810^{-18} newtons (0.000000000000000001 newton).



  • It is used in highly specialized fields such as quantum physics, nanotechnology, and advanced experimental research where forces are incredibly minute.



  • To put it in perspective:



1 aN=0.000000000000000001 N1 \text{ aN} = 0.000000000000000001 \text{ N}

Attonewtons allow scientists to quantify forces at the tiniest scales imaginable, beyond typical atomic interactions.


Poundal [pdl]


The poundal is a unit of force in the foot-pound-second (FPS) system, mainly used in the United States.



  • It is defined as the force required to accelerate a one-pound mass by one foot per second squared.



  • Mathematically:



1 pdl=1 lb×1 ft/s2=0.138255 newtons1 \text{ pdl} = 1 \text{ lb} \times 1 \text{ ft/s}^2 = 0.138255 \text{ newtons}

  • The poundal is smaller than the pound-force since Earth's gravity accelerates a pound mass at approximately 32.174 ft/s², making:



1 lbf=32.174 pdl1 \text{ lbf} = 32.174 \text{ pdl}

  • It is mostly of historical interest and rarely used in modern engineering but can appear in classical mechanics problems using the FPS system.



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