Mechanical engineering unit of power. Defined as 550 foot-pounds per second.
|1 horsepower (hp)||=||550 ft lbf s-1||1 hp||=||33000 ft lbf min-1|
|1 hp||=||745.7 W||1 hp||=||1.014 metric horsepower (PS or ch)|
|1 hp||=||2546 Btu h-1||1 hp||=||42.433 Btu min-1|
|1 hp||=||0.178 kg cal s-1||1 hp||=||641.6 kg cal h-1|
Originally defined by James Watt as 33000 ft lb of work done by a horse in 1 minute.
Subjects: Mechanical Engineering