3._Engineering_Calculations_Units - January18 SI units...

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January18. SI units Basic units Unit / dimension Common multiple units Length m km, cm, mm, µ m Mass kg g, mg, µ g Time s ms, µ s, ns Temperature K Derived units Defining equation Dimension Unit Force F = ma 2 s m kg N Pressure A F P = 2 s m kg 2 m N Pa = Work W = F x 2 2 s m kg J = N m Power t W W = & 3 2 s m kg s J W = Density V m = ρ 3 m kg 3 m kg AE units g c (unit conversion factor): 2 2 0 . 1 174 . 32 s N m kg s lb ft lb g f m c = = (dimensionless)
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