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Homework Help: Relationship of applied load against beam surface strain

  1. Oct 13, 2011 #1
    1. The problem statement, all variables and given/known data
    I am working with an electronic bathroom scale and now have to find the relationship of the applied load which is mass in kg against the beam surface strain.
    The maximum load is assumed to be 75 kg.

    2. Relevant equations

    A picture of the beam has been attached

    3. The attempt at a solution
    I can calculate the bending moment at one of the ends

    ƩM=-R1*L+F1*(L-0,75)+75*0,75 =0
    I also know that moment of inertia of a beam is I=bh^3/12
    and h is given.

    But then I am stuck

    Hope some can help be.

    Best regards

    Attached Files:

    • beam.JPG
      File size:
      28.4 KB
  2. jcsd
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