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What is the amount of work done in moving the box from the bottom to t

  1. May 25, 2014 #1
    1. The problem statement, all variables and given/known data

    A 160 Newton box sits on a 10 meter long frictionless plane inclined at an angle of 30° to the horizontal as shown. Force (F) applied to a rope attached to the box causes the box to move with a constant speed up the incline.

    Calculate the amount of work done in moving the box from the bottom to the top of the inclined plane.
    _____ J


    3. The attempt at a solution
    So far i come up with h=u*t-0.5*g*t^2, but now sure where to go
     
  2. jcsd
  3. May 25, 2014 #2

    Nathanael

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    What is "h" and what is "u"?


    There is a simple way to do this based on conservation of energy. None of the energy is lost to friction.
     
  4. May 25, 2014 #3
    Yeah im not sure where i was going with this very confused with the question
     
  5. May 25, 2014 #4

    Nathanael

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    The problem says to find the work done.

    Work is (or "causes") a change in energy.

    Does the box change it's energy at all from the bottom of the incline to the top?
     
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