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Mechanics of Materials; I need help regarding this very fundamental problem.

  1. Mar 28, 2012 #1
    Why would the force P not always be equal to 60 kips?

    (I mean, since the structure is in equilibrium, and the members are rigid, can't we shift the two forces of 30kips each to the line of action of force P and conclude that P is always 60kips?)

    Thanks for your time.

    Attached Files:

  2. jcsd
  3. Mar 28, 2012 #2


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    Gold Member

    You don't know what force is supplied by the wall.

    Now read what the problem asked you to find.
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