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Homework Help: Solving Arched Beams

  1. Dec 10, 2013 #1
    1. The problem statement, all variables and given/known data
    We've built a bridge for a group project and we're trying to analyse the maths behind it to put on a poster.
    I've included photos of the bridge, and a drawing of what I think the forces are, but I'm unsure how to solve it.
    Our bridge broke at the 13th kilogram weight, so we're trying to solve for the 12kg weight.

    2. Relevant equations
    Not entirely sure which equations apply, but I assume;
    ƩFx=0, ƩFy=0, ƩM=0 ??

    3. The attempt at a solution
    I'm not sure I've got the drawing right, so a solution could be unreliable.




    Thanks :)
  2. jcsd
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