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Statics: Tension or Compression?

  1. Jan 26, 2015 #1
    When examining a member, how do I tell whether it is undergoing tension or compression?

    It's more of a general question, but since a visual might help with the explanation, this could be useful:

    3Nr8op8.png
     
  2. jcsd
  3. Jan 26, 2015 #2

    mfb

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    Staff: Mentor

    You can calculate it.
    Sometimes intuition and some rough analysis are sufficient, sometimes they are not.
     
  4. Jan 26, 2015 #3
    The calculations are not the problem. Figuring out whether the members are undergoing tension or compression for the FBDs is what I'm having trouble with.
     
  5. Jan 26, 2015 #4

    mfb

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    Staff: Mentor

    The calculations will give you negative or positive values. There is no need to know that in advance.
     
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