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How does your power in climbing a flight of stairs compare with the power of a 100 W light bulb?
Wiki User
∙ 13y ago
One joule is the amount of energy required to apply a force of one newton through a distance of one meter (one newton-meter), or it is the amount of energy required to produce one watt of power for one second (one watt-second).
If we assume that you have a mass of 200 pounds or 91 kilograms, then it requires a force of 891 newtons (91 * 9.82) to support you. This force will be the same whether you are standing still or climbing, even though it will momentarily change when you accelerate, so we can use 891 newtons.
If we then assume that a flight of stairs is about 3 meters, we can calculate the power to climb up at 891 * 3 = 2672 joules per flight.
Lets look at the light bulb. That one is easy. 100 watts is 100 joules per second.
Now the question is, how fast can you climb? Let assume 10 seconds per flight of stairs. That translates to 267 joules per second, so you use nearly three times the energy of a 100 watt light bulb to climb stairs. (Two times, if you climb a little bit slower.)
Wiki User
∙ 13y ago
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