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Can someone confirm my answers on a few torsion problems?

  1. May 22, 2017 #1

    EastWindBreaks

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    1. The problem statement, all variables and given/known data
    QQ图片20170523004452.png

    2. Relevant equations


    3. The attempt at a solution
    Scan0003.jpg
    I feel I did something wrong, but not sure where is my problem. I dont feel conformable on number 26 and 27 and 29, can someone please tell me which answer is incorrect and any tip on solving it would be greatly appreciated!
     
  2. jcsd
  3. May 23, 2017 #2

    PhanthomJay

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    Well you better start feeling comfortable because you got them all correct! Nice work.
     
  4. May 24, 2017 #3

    EastWindBreaks

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    wow, I was expecting at least one incorrect answer, thank you for checking my work!
     
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