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Homework Help: The Work–Kinetic Energy Theorem

  1. Nov 16, 2012 #1
    I would appreciate help to solve the problem proposed in Figure 6-4 by PA Tipler 5th Ed ("What did your professor exert force if the sled starts with a speed of 2 m / s ... "). Thanks
  2. jcsd
  3. Nov 16, 2012 #2
    We don't own your text book.

    You'll have to post the full problem, preferably with a drawing, picture or scan of the diagram included.

    You will also have to tell us how you've approached the problem so far.
  4. Nov 18, 2012 #3
    Attached simplified scheme and a resolution scheme.

    In Tipler, gives values ​​for d, v0 and vf and gives the solution (138N). I can understand that the value of M is the previous problem in the book.

    But neither the value nor the H m are supplied. With the scheme that I propose, I think they are necessary.

    I appreciate any help.

    Thank you.

  5. Nov 18, 2012 #4

    Doc Al

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    Staff: Mentor

    I see nothing attached.

    OK. (I happen to have that book, so I know what you are referring to.)

    I don't understand this sentence. What values are not supplied?
    Show your proposed solution. (No values beyond what was given are needed.)

    For the benefit of others, please post a scan of the textbook problem. Or at least a better statement of the problem.
  6. Nov 18, 2012 #5

    Attached Files:

  7. Nov 18, 2012 #6

    Doc Al

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    Staff: Mentor

    Are you sure you are looking at the correct figure, which is figure 6-4? Your attachment looks closer to figure 6-5, which is a different problem.
  8. Nov 20, 2012 #7
    You're right. Thanks
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