Convert poundal [pdl] to joule/meter [J/m] Online | Free force Converter

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 lbร—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/sยฒ, 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.


Joule per Meter [J/m]


Joule per meter is a unit that represents energy per unit length.



  • Joule (J) is the SI unit of energy.



  • When expressed as joule per meter (J/m), it describes how much energy is distributed or transferred along each meter of length.



  • Commonly used in contexts such as:



    • Energy density along a line (e.g., tension in a string or energy stored per unit length in materials).



    • Describing work done per meter traveled.




  • It can also relate to forces when considering energy changes over distance:



1 J/m=1 N(since 1 N=1 J/m)1 \text{ J/m} = 1 \text{ N} \quad (\text{since } 1 \text{ N} = 1 \text{ J/m})

This means joule per meter can be equivalent to a newton, representing force.



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