Mechanics of Materials - is this correct?

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Homework Help Overview

The discussion revolves around a mechanics of materials problem, where the original poster seeks validation for their solution approach. The context suggests a focus on material behavior under load, specifically relating to elongations and forces.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • The original poster expresses uncertainty about the correctness of their solution due to the absence of answers for comparison. Some participants provide positive feedback on the presentation of the work, while others share verification attempts and equations related to elongations.

Discussion Status

The discussion includes affirmations of the original poster's work, with some participants offering verification. However, there is no explicit consensus on the correctness of the solution, and the original poster's request for help indicates ongoing exploration.

Contextual Notes

The original poster mentions a lack of answers for comparison, which may affect their confidence in the solution. The equations provided by another participant suggest a focus on specific elongation calculations, but the implications of these equations remain unverified in the discussion.

niece of md.
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Homework Statement



question110.jpg




Homework Equations



neededformulas.jpg




The Attempt at a Solution



solve002.jpg


I was attempting to solve this exercise, but since I have no answers, I have no way of knowing if it's correct.

Any help Is more than appreciated
 
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You did a superior job with this and your work is well presented.. the lowest value of P is the answer. Excellent work!
 
All the best! There is my verification
http://img821.imageshack.us/img821/8128/tophysicsforum02.png
 
Last edited by a moderator:
By the way Elongations (z - from left to right within each segment)
[itex]w_{{1}}=4\,{\frac {Pz}{E\pi \,{{\it Diam}}^{2}}}[/itex]

[itex]w_{{2}}=4\,{\frac {P \left( z{{\it Diam}}^{2}+a{{\it diam}}^{2}<br /> \right) }{{{\it Diam}}^{2}E\pi \,{{\it diam}}^{2}}}[/itex]
 

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