# Eli5: According to Google a horse at peak power produces 15 horse power…. so what animal at peak power would produce 1 horse power?

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Question is as the title suggests really.

Essentially I went on a watt bike the other day and my friend said I nearly produced one horse power. So obviously I then googled how much horse power a horse produces, and then when I found out it is more than one I was curious as to what animal produces one horse power and what we should change the measurement ‘horsepower’ too.

Also, I don’t think I’ve ever typed horse and horse power so much in such a little space

In: Mathematics

I get your question but still confused. A a horse at peak can do 15 horsepower, but 1 horsepower was done when not at peak power.

That’s like saying to find an animal who runs as fast as humans walk as “walking speed” is slower than our running speed.

Humans and horses actually. Depends what you’re looking at.

An healthy human can output 1.2 hp briefly or 0.1 without getting tired.

A horse can output 15 horse power briefly but the general recommendation was to make your farm horse work only as hard as what would be 1 horse power, sustained.

If you were at max output all the time you would get exhausted very quickly. Engines don’t get tired.

> I was curious as to what animal produces one horse power

Well, it looks like you proved a human does! And probably other animals of similar strength, like a husky pulling a dogsled.

> and what we should change the measurement ‘horsepower’ to.

Horsepower doesn’t refer to the peak output of a horse, but rather the sustainable output of a horse over a period of hours. A horse can output 5 HP for a few moments, or 1 HP consistently. A human can output 1-1.2 HP for a few moments, or 0.1 HP consistently.

If we’re going to run a tractor all day planting and harvesting a large field, we want to denote its strength in terms of sustained output in a biological analogue, not peak output.