Question 1183009: A dog races up the stairs in a time of 1.80 seconds. If the stairs are 12 feet high, how much power in hp is the dog putting out? The weight of the dog is 48 lbs ? Syw
Answer by ikleyn(52794)   (Show Source):
You can put this solution on YOUR website! .
It is just long time (as long as 60 years) NOBODY uses these archaic units, feet and pounds, in Physics problems.
To solve the problem, convert pounds to kilograms for the mass "m";
convert feet to meters for the height "h";
Calculate the change of the potential energy P = mgh, using the converted values
(here g = 10 m/s^2 is the gravity acceleration).
Finally, to get the POWER, divide the found value of the potential energy P by the time of 1.8 seconds.
Doing this way, you will get the answer in watts.
That's all.
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