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Homework Help: Zero force member question!

  1. Dec 6, 2009 #1
    1. The problem statement, all variables and given/known data

    So when it comes to finding the zero force members, am I correct in assuming that any member previously eliminated will cease to act as a member for a point?

    http://img402.imageshack.us/img402/603/47362170.th.jpg [Broken]

    so for example we know that IJ is a zero force member because when we view it via point, J, it's obvious that there's 2 colinear members and the third is an extra. But if we now move to point I, can I essentially delete IJ and completely ignore that it's there? so that I can get another situation where there's 2 colinear members and and the third extra (IL)?

    2. Relevant equations

    3. The attempt at a solution
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Dec 6, 2009 #2


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    Yes, you are correct, both IJ and IL are zero force members (there are others also).
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