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Difference between revisions of "Horsepower"
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→Drawbar horsepower (dbhp)
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<math>P / {\rm hp} = {{2025 \times 5 } \over 375} = 27</math>. | <math>P / {\rm hp} = {{2025 \times 5 } \over 375} = 27</math>. | ||
The constant "375" is because 1 hp = 375 lbf·mi/h. If other units are used, the constant is different. When using a coherent system of units, such as | The constant "375" is because 1 hp = 375 lbf·mi/h. If other units are used, the constant is different. When using a coherent system of units, such as SI (watts, newtons, and metres per second), no constant is needed, and the formula becomes <math>P = Fv</math>. | ||
=== RAC horsepower (taxable horsepower) === | === RAC horsepower (taxable horsepower) === | ||