Effective Mass of Cantilever beam (getting .36m instead of .23m)

  • Thread starter Mike415
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Homework Statement


Im trying to find the equivalent mass of a beam so it can be modeled as a hanging point mass problem.

Given the v = y_dot equation, y equation, and T

Somewhere Im messing up with my math I believe as Im getting .36m instead of what I believe should be .23m.

The Attempt at a Solution



http://i.imgur.com/NQc9V.png
 

Answers and Replies

  • #2
SteamKing
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Check the expansion of the []^2 term in the sixth line of your calculation.
 
  • #3
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Check the expansion of the []^2 term in the sixth line of your calculation.
Ha, thanks. Didn't think Id need a refresher on completing the square!

:blushing:
 

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