Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Finding shear and moment diagrams for a simply supported beam.

  1. Mar 25, 2010 #1
    1. The problem statement, all variables and given/known data


    2. Relevant equations

    3. The attempt at a solution

    I know how to work shear and moment diagram problems, but I am a little confused as to how to start this one. Does it matter that the force is hanging off the bracket? Can I just continue as if the force was acting directly on the beam, or is there something else I need to do. I know if the force was acting directly on the beam, the support reactions would be P/2 at points A and C.
    Last edited: Mar 25, 2010
  2. jcsd
  3. Mar 25, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Hi haleystew, welcome to PF. To get correct shear and bending moment diagrams, you need to know how load P acts at the arm's connection point with the beam (i.e., point B). This can be accomplished by replacing P with an equivalent load (e.g., force and moment if necessary) at point D, and then at point B. Know what I mean?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook