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Calculating force required for specific strain

  1. Sep 30, 2007 #1
    I have a cantilever with one fixed end and a point force on the other end. The cantilever beam itself is a perfect rectangular prism. We used a strain gage to measure the strain values, so how would I calculate the point force? I know the value for Young's Modulus of the cantilever used. Any help would be much appreciated!
     
    Last edited: Oct 1, 2007
  2. jcsd
  3. Oct 16, 2007 #2

    Astronuc

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    Staff: Mentor

    There would be a particular equation that would apply to the specific geometry, beam properties, and applied force.
     
  4. Oct 16, 2007 #3

    FredGarvin

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    Science Advisor

    Since you know the geometry, where the strain was measured and the strain value, you could use the constiutive equations for relating stress to strain. From there you could calculate the force. There is a very basic equation for the stress in a cantilever beam due to a point load.
     
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