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Homework Help: Strength of Materials problem

  1. Apr 30, 2006 #1
    Im including a scan of the problem and my work, please let me know if I did this right. Sorry about the sloppy handwriting.
    http://img244.imageshack.us/img244/6521/strengthsproblem3rk.th.jpg [Broken]
    http://img241.imageshack.us/img241/8866/strengthsworkedout1rw.th.jpg [Broken]


    Last edited by a moderator: May 2, 2017
  2. jcsd
  3. Apr 30, 2006 #2
    Link dont work
  4. Apr 30, 2006 #3
    Fixed, thanks
  5. Apr 30, 2006 #4
    Nobody? Am atleast on the right track? I wish there was a way to check these sort of problems.
  6. May 1, 2006 #5


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    Science Advisor

    You might check your torque calculation. Using the numbers you are using, the equation should be (torque will be in ft-Lbf): [tex]P = \frac{T \omega}{5252}[/tex]

    I would do a quick and dirty compare using a rule of thumb based on distortion energy

    [tex]T = \frac{\pi d^3}{16}(.58 S_y)[/tex]

    I think you've got the right idea though.
    Last edited: May 1, 2006
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