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Sliding snowboarder

  1. Feb 19, 2009 #1
    1. The problem statement, all variables and given/known data

    A snowboarder of mass 85 kg slides down the trail shown in the figure below. The first part of the trail is a ramp that makes an angle of 19degrees with the horizontal, and the final portion of the trail is flat. Find the work done by gravity on the snowboarder as she travels from the beginning to the end of this trail. For the figure use h = 44 m.


    2. Relevant equations

    I am really clueless

    3. The attempt at a solution

    Again, clueless, i really need help with this..thanks
  2. jcsd
  3. Feb 19, 2009 #2


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    Science Advisor

    Dang that is one awesome picture.

    Do you know the equation for potential energy due to gravity?
  4. Feb 19, 2009 #3
    Yes.. Isnt it PEg=mgy
  5. Feb 19, 2009 #4


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    Homework Helper

    The work done by gravity is the decrease in gravitational potential energy, mgh.
  6. Feb 19, 2009 #5
    Thanks guys!! I didnt think it was that easy.. :blushing:
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