Re: Horsepower

[tdm@akguc.att.com]

Re:  Horsepower

1 hp = 33,000 ft-lbs/minute.

"A 1,500 lb - 1,900 lb horse can work continuously for up to 
10 hours/day at a rate of 1 hp." Brody, "Bioenergetics and 
Growth".
For Men, age 35:    hp = 0.35 - 0.092log t
     t is in minutes,     4min < t < 480 min.
Marks Handbook, "Man and Animal Generated Power" under Power 
Miscellany.

I believe Machine Design Magazine rates the cars, internal
combustion engines in BTU's.  u
t
    1hp = 42.4 BTU/min

I luuv science....

Don Mathis
Bell Labs