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Homework Help: Bending Moment Statics Solving

  1. Jan 1, 2018 #1
    1. The problem statement, all variables and given/known data
    It's a project so not a textbook question.

    3. The attempt at a solution
    Given in imgur picture.

    I'm looking to solve for C. The problem is actually a trailer with 3 axles but simplifying here as 3 fixed points where the wheels would be. The wheels A and B will want to be sized to take the full load. However, how much load will the wheel at C be subject to here so I can size accordingly?
  2. jcsd
  3. Jan 2, 2018 #2


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    Science Advisor
    Homework Helper
    Gold Member

    Since there are three supports, you cannot solve it representing the beam as rigid. You need to consider its deformation (a quartic).
    There is no way that A and B would take the full load, though, since the centre of the load is between B and C.
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