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Forces on an unusual supporting structure

  1. Jun 15, 2007 #1
    1. The problem statement, all variables and given/known data
    The frame must support a weight of 10kg, approximately 0.5m above the floor. The weight is suspended from the top of a vertical elipse shape, of which 1 side is missing. The bottom of the half elipse rests on a base.

    It looks like a slightly straighter "C" with the weight hanging on the right hand side. The C is approximately 255mm across and 680mm tall.

    I need to know where the major stress points are, how strong the frame material must be to avoid bending/breaking, and what shape the C needs to be, or the size of the base, to avoid the unit tipping over to the right.


    2. Relevant equations
    It's been a while since I've done physics A level, my notes are somewhere in a box halfway across the country, and I have no idea what formulae I'm looking for sadly.


    3. The attempt at a solution
    I have drawn out a squared version of the design, and tried modelling it in Solidworks to find the answer.

    The most I have found is that the major stresses will be at the upper left hand side of the C, and at the bottom of the C where it meets the stand base.

    The materials can be anything I want, I'm just after the load they must take in each direction!
     
    Last edited: Jun 15, 2007
  2. jcsd
  3. Jun 18, 2007 #2
    This is NOT my homework, I am not being marked on it... but it is a matter of balance. Please someone answer, I'm in desperate need!!!
     
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