Horsepower

Horsepower is the unit of power that has been adopted for engineering work. One horsepower
is equal to 33,000 foot-pounds per minute or 550 foot-pounds per second. The kilowatt,
used in electrical work, equals 1.34 horsepower; or 1 horsepower equals 0.746
kilowatt. However, in the metric SI, the term horsepower is not used, and the basic
unit of power is the watt. This unit, and the derived units milliwatt and kilowatt, for
example, are the same as those used in electrical work.

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