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Difference between revisions of "Horsepower"
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→Relationship with torque
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=== Relationship with torque === | === Relationship with torque === | ||
For a given [[torque]], the equivalent power may be calculated. The standard equation relating torque in | For a given [[torque]], the equivalent power may be calculated. The standard equation relating torque in foot-pounds, rotational speed in [[RPM]] and horsepower is: | ||
:<math>P / {\rm hp} = {[\tau / ({\rm ft \cdot lbf})] [\omega / ({\rm r/min})] \over 5252}</math>. | :<math>P / {\rm hp} = {[\tau / ({\rm ft \cdot lbf})] [\omega / ({\rm r/min})] \over 5252}</math>. | ||
This is based on Watt's definition of the mechanical horsepower. The constant 5252 is rounded; the exact value is 16,500/π. See [[torque#Relationship between torque and power|torque]]. | This is based on Watt's definition of the mechanical horsepower. The constant 5252 is rounded; the exact value is 16,500/π. See [[torque#Relationship between torque and power|torque]]. | ||