how much power does a decently strong human have
#21
how much power does a decently strong human have
I found this old post and thought, you know, I've done this before. About 10 years ago when I was teaching school we tested horsepower in a physics class. Someone up the post has the stuff right at 550 lbs one ft in one second. So run up a flight of stairs. Easily measured height and easy to measure the weight going up the stairs. All you need is a tape measure, scale and stop watch. I'll tell you right now the fat kids win. The skinny athletic kids seemed to be in the 3/4 HP range and the faster linebacker type of kids can exceed 1 HP. Girls, well they don't have enough weight without putting on a 50 lb back pack. But keep in mind the duration that power can be kept up. The first flight of stairs would obviously be rather quick. But the 5th flight?
#22
how much power does a decently strong human have
There's something called Google out there... it requires very litlle brain horsepower to use, lol. Found found in 3rd reference: "Healthy human can sustain approx 0.28 horsepower to complets exhaustion in 1 hour 0.1 to exhaustion in 8 hours, 1st class athelete approx 0.45 horespower to exhaustion in 1 hour, 0.4 to exhaustion in 8 hours.
#23
how much power does a decently strong human have
<div class="FTQUOTE"><begin quote>Originally posted by: jarmoore
<blockquote>Quote
Originally posted by: squeege
I agree.....1/4or maybe 1/2hp .....I would think a 1/2hp electric motor could give us a run for our money in most circumstances</end quote></div>
Yea, a 1.0hp winch can pull 3000lbs.
1/2 of 3000lbs = 1500lbs ... no human could pull 1500lbs straight up a tree like a 1/2hp winch could.</end quote></div>
I can pull any weight up a tree you request, as long as you give me enough pulleys and time, and a strong enough tree. A 1/2 HP winch with what gearing? A good athelete will keep up with your winch (as far as matching wieght and lift rate)for at least an hour.
<blockquote>Quote
Originally posted by: squeege
I agree.....1/4or maybe 1/2hp .....I would think a 1/2hp electric motor could give us a run for our money in most circumstances</end quote></div>
Yea, a 1.0hp winch can pull 3000lbs.
1/2 of 3000lbs = 1500lbs ... no human could pull 1500lbs straight up a tree like a 1/2hp winch could.</end quote></div>
I can pull any weight up a tree you request, as long as you give me enough pulleys and time, and a strong enough tree. A 1/2 HP winch with what gearing? A good athelete will keep up with your winch (as far as matching wieght and lift rate)for at least an hour.
#24
how much power does a decently strong human have
OLYGUY12 is spot on. I did the same experiment in high school when I was a 250 defensive lineman. I came out at 1.2hp because after the first 25 steps I started to slow down. I can tell you that there is no way myself and another lineman could beat a horse in tug - o - war. Stick with physics and leave the horses be.
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