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Work Done On An Incline

  1. Oct 12, 2007 #1
    1. The problem statement, all variables and given/known data
    FATHER PUSHs IS DAUGHTER ON A SLED UP A SNOWY INCLINE. IF THE SLED MOVES UP THE HILL WITH A CONSTANT VELOCITY how MUCH WORK IS DONE?
    CHILD & SLED= 35KG FRICTION OF SNOW & SKIDS= .2 INCLINE= 15 DEGREES, d=10 m

    Do i need to find the force? (N=mg)
    and then Ncos15degrees?


    3. The attempt at a solution
    I don't know how to get started.
     
    Last edited: Oct 12, 2007
  2. jcsd
  3. Oct 12, 2007 #2

    cristo

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    Staff Emeritus
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    Have you made any attempt to answer this question? You must show some work before we can help you. Also, in future, would you please write in lower case: upper case is considered to be shouting.
     
  4. Oct 12, 2007 #3
    Yes I have, but I'm not getting the same answer as in the book.
    Sorry about the upper caps.
     
  5. Oct 12, 2007 #4
    35kg*9.8= 343N
    343N cos 15 degrees = .97
     
  6. Oct 12, 2007 #5
    What is the definition of work?

    Casey
     
  7. Oct 12, 2007 #6
    definiton of work is W=Fd
     
  8. Oct 12, 2007 #7
    or W=Fd = (Fcos thete)
     
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