Convert poundal [pdl] to millinewton [mN] Online | Free force Converter

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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.


Millinewton [mN]


Millinewton is a small unit of force in the International System of Units (SI).



  • 1 millinewton (mN) equals 10−310^{-3} newtons (0.001 newton).



  • It is commonly used to measure very small forces, such as in microengineering, delicate instrumentation, or biomechanical applications.



  • To put it in perspective:



1 mN=0.001 N1 \text{ mN} = 0.001 \text{ N}

Millinewtons are useful for expressing forces smaller than centinewtons, allowing precise measurement of low-force phenomena.



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