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

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SUMMARY

The discussion centers on calculating the effective mass of a cantilever beam for modeling as a hanging point mass problem. The user initially calculated an equivalent mass of 0.36m, while the expected value is 0.23m. The discrepancy arises from an error in the mathematical expansion of the squared term in their calculations. A reminder to review the technique of completing the square was provided to correct the mistake.

PREREQUISITES
  • Understanding of cantilever beam mechanics
  • Familiarity with the concept of effective mass in physics
  • Proficiency in mathematical techniques, specifically completing the square
  • Knowledge of differential equations related to motion
NEXT STEPS
  • Review the principles of cantilever beam analysis
  • Study effective mass calculations in dynamic systems
  • Practice completing the square in algebraic expressions
  • Explore differential equations related to oscillatory motion
USEFUL FOR

Students in engineering or physics, particularly those focusing on structural analysis and dynamics, as well as educators teaching concepts related to cantilever beams and effective mass calculations.

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

The Attempt at a Solution



http://i.imgur.com/NQc9V.png
 
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Check the expansion of the []^2 term in the sixth line of your calculation.
 
SteamKing said:
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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