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Finding average power for an object being vertically lifted

  1. Oct 13, 2008 #1
    1. The problem statement, all variables and given/known data

    If a ski lift raises 100 passengers averaging 668 N in weight to a height of 175 m in 60 s, at constant speed, what average power is required of the force making the lift?

    2. Relevant equations

    3. The attempt at a solution
    I tried to solve this by first using W=fd to find W...so 668/175=3.817
    I then used P=W/t so 3.817/60
    however this answer was wrong...what am I doing wrong?
  2. jcsd
  3. Oct 13, 2008 #2


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    Staff Emeritus
    Science Advisor
    Gold Member

    668 Newtons is the average weight of one of the passengers.

    Secondly, why are you dividing by the distance?
  4. Oct 13, 2008 #3
    wow I was making a really stupid mistake. Thanks for the help, I figured it out
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