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Statics(Frames question)

  1. Dec 7, 2009 #1
    In a frame with hinged joints, is it possible when i cut a piece, that if i don't have given horizontal forces GIVEN, i can assume all horizontal forces zero? Or do i have to leave that piece that gives me zero as the last piece i analyze?
     
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  3. Dec 9, 2009 #2

    PhanthomJay

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    Can you please clarify this question with a sketch or description of a sketch?
     
  4. Dec 14, 2009 #3
    You should never assume forces are zero without verifying it with an equilibrium equation. I can draw you pin-jointed frames with vertical loads only; yet balancing horizontal forces are present. A simple 3-hinged arch will do as an example; that is, two inclined rods on hinged supports, carrying a central point load.
     
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