How to find horse power?
Alternatively does a calculation of HP require the distance to be in lift against gravity?
Answer:
1 lb = 1lbm x g = 32.2 lbm.ft / sec^2
MOMENTUM = MASS X VELOCITY = Ibm X ft/sec
FORCE = RATE OF CHANGE OF MOMENTUM . = ibm x ft /sec^2
WORK = FORCE X DISTANCE (in the direction of force), ft- Ibs
WEIGHT = MASS X ACCELERATION DUE TO GRAVITY =32.2 x ibm. ft/sec^2.
ALL ABOVE ARE VECTOR QUANTITIES AND HAVE DIRECTION.
1 HP = 550 ft-Ibs /sec = 33000 ft-lbs / min.
so , power = work done in ft.ibs /min / 33000 HP
Power has to include a time element. So you can't divde ft lbs and get horsepower. Distance against gravity isn't necessary.
go too nema and ckeck there charts
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