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Solving equation for I

  1. Oct 4, 2013 #1
    Hello there,

    I need some help rearranging a combination of equations and was wondering if someone could help? I am attempting to find the sum of the deflection in a beam, but to do so for the boundary conditions require a total of four formulas in series.

    I need to solve the attached equation for I, which is common throughout.

    I hope someone can help.

    Thanks in advance.

    Matt
     

    Attached Files:

  2. jcsd
  3. Oct 4, 2013 #2

    CompuChip

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    Maybe I'm missing something obvious, but the only place I see ##I## is in the denominator of each summand.
    So can't you just factor it out?
    $$\sum \delta = \frac{1}{24 E I} \left\{ \vphantom{\frac{W_1}{E I}} \cdots \right\}$$
     
  4. Oct 4, 2013 #3
    CompuChip,

    Thanks for that. I feel a bit thick now. It worked and I got the desired solution.

    Matt
     
  5. Oct 4, 2013 #4

    CompuChip

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    No problem, we all make those mistakes.
    I was just afraid that you were going to say "Oh, I forgot to mention that the I1,2,3 are the components of I", or "W depends on I" or something nasty like that :)
     
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