Compound Machines Efficiency

on . Posted in Dimensionless Numbers

Compound machines efficiency, abbreviated as \(n_{comp}\), a dimensionless number, a simple machine is a mechanical device that changes the direction or magnitude of a force.  A compound machine is machines connected in series.  Efficiency is expressed in percentage and always less than 100%. 


Compound machines efficiency formula

\(\large{ n_{comp} = n_1 \; n_2 ...    }\) 
Symbol English Metric
\(\large{ n_{comp} }\) = compound machines efficiency \(\large{dimensionless}\)  
\(\large{ n_1 }\) = efficiency of the first machine \(\large{dimensionless}\)
\(\large{ n_2 }\) = efficiency of the second machine \(\large{dimensionless}\)


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Tags: Engine Equations Efficiency Equations