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Homework Help: Really ANNOYING dynamics problem, HELP!

  1. Apr 7, 2010 #1
    Ok, so the problem is here:
    http://polaris.deas.harvard.edu/galileo/images/material/1722/477/PracticeProblems.pdf [Broken]
    It's number 14.
    I get Vp as 16.74 using the equation Vb = Va + (omega)ab cross (position vector)b/a, i found Vb as 12.56i-12.56j
    Then i use Vp = Vb + (omega)bp cross (position vector)p/b. Computing i get 16.74 in/s, when it should be 55.9 in/s.

    Thanks much!
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Apr 7, 2010 #2
    Still having trouble. i don't see how the result can be even near 50in/s
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