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Homework Help: Moment and tension problem maybe

  1. Mar 3, 2013 #1
  2. jcsd
  3. Mar 3, 2013 #2
    You have to be logged in to see the problem.
  4. Mar 3, 2013 #3
    1. We are not allowed by the forum's rules to solve problems. We can help you, but you need to demonstrate some effort on your part.

    2. The link requires a valid account, which I doubt many people around here have there. You might want to make this problem more accessible if you need help with it.
  5. Mar 4, 2013 #4

    here is the image

    Attached Files:

  6. Mar 4, 2013 #5
    What have you tried?
  7. Mar 4, 2013 #6
    completely no idea how to do. i don't need answer but rather explanation of how to do this. please tell me. i will be thankful.
  8. Mar 4, 2013 #7


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    Staff Emeritus
    Science Advisor
    Homework Helper

    Can you draw a free body diagram of the plank and the student standing on it?

    Do you know what conditions are necessary for static equilibrium?
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