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How do I solve this allowable stress question?

  1. Apr 22, 2015 #1
    1. The problem statement, all variables and given/known data
    Finding the maximum allowable force P before failure

    2. Relevant equations
    Shear /normal stress = Force / Area

    3. The attempt at a solution
    I know that I can resolve the force P to be along and normal to the end of the wooden beam to find the respective forces separately,applying factor of safety, from the failure stresses given and therefore, determine which P is lower which shall be the maximum allowable P. However, I do not see there the distance b come into play. Am i missing something?
     

    Attached Files:

  2. jcsd
  3. Apr 22, 2015 #2
    Can you show how you "resolved" P?
     
  4. Apr 26, 2015 #3
    Pcos30 will be my shear force and Psin30 will be my normal force to the end of the beam.
     
  5. Apr 26, 2015 #4
    Don't you mean P/2cos30 and P/2sin30?
     
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