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    Quantity

    SI

    USCS

    Symbol

    Unit

    Symbol

    Unit

      Acceleration, angular
      °¢°¡¼Óµµ

     

    rad/s2

     

    rad/s2

      Acceleration, linear
      °¡¼Óµµ

     

    m/s2

     

    ft/s2

      Area
      ¸éÀû

     

    m2

     

    ft2

      Density (mass)
      Áú·® ¹Ðµµ

     

    kg/m3

     

    slug/ft3

      Energy
      ¿¡³ÊÁö

    J

    N·m

     

    ft-lb

      Force
     Èû

    N

    kg·m/s2

    lb

    lb

      Frequency
      Á֯ļö

    Hz

    s-1

    Hz

    s-1

      Impulse, angular
      °¢Ãæ°Ý·®

     

    N·m·s

     

    ft-lb-s

      Impulse, Linear
      Ãæ°Ý·®, ¿ªÀû

     

    N·s

     

    lb-s

      Intensity of Force
      ºÐÆ÷ÇÏÁß°­µµ

     

    N/m

     

    lb/ft

      Length
      ±æÀÌ

    m

    m

    ft

    ft

      Mass
      Áú·®

    kg

    kg

     

    lb-s2/ft

      Moment of a force; torque
      È¸Àü·Â

     

    N·m

     

    ft-lb

      Moment of inertia (mass)
      °ü¼º ¸ð¸àÆ®

     

    kg·m2

     

    slug-ft2

      Geometrical moment of inertia
      ´Ü¸é 2Â÷ ¸ð¸àÆ®

     

    m4

     

    in.4

      Power
      ÀÏ·ü(µ¿·Â)

    W

    J/s

     

    ft-lb/s

      Pressure
      ¾Ð·Â

    Pa

    N/m2

    psf

    lb/ft2

      Section modulus
      ´Ü¸é °è¼ö

     

    m3

     

    in.3

      Specific weight (weight density)
      ºñÁß

     

    N/m3

    pcf

    lb/ft3

      Stress
      ÀÀ·Â

    Pa

    N/m2

    psi

    lb/in.2

      Time
      ½Ã°£

    s

    s

    s

    s

      Velocity, angular
      °¢¼Óµµ

     

    rad/s

     

    rad/s

      Velocity, linear
      ¼Óµµ

     

    m/s

    fps

    ft/s

      Volume (liquids)
      ¾×ü üÀû

    L

    10-3m3

    gal.

    231 in3

      Volume (solids)
      °íü üÀû

     

    m3

    cf

    ft3

      Work
      ÀÏ

    J

    N·m

     

    ft-lb

      SI : International System , USCS : U.S. Customary System