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Homework Help: Power Output

  1. Oct 15, 2009 #1
    1. The problem statement, all variables and given/known data

    Suppose your mass is 76.0 kg and you climb 40 stairs of height 18 cm in 19.0 s. What is your power output as you climb the stairs?

    2. Relevant equations

    Power = Work / change of time

    3. The attempt at a solution

    I need a hint on solving for the work. I tried solving for the kinetic energy, but my answer was wrong.
  2. jcsd
  3. Oct 15, 2009 #2


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    Science Advisor
    Homework Helper

    Power is energy / time.
    What is the change in energy between the top and bottom?
    How long did it take to generate that energy.
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