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Calculation of strain

  1. Sep 17, 2016 #1
    1. The problem statement, all variables and given/known data
    for the elongation due to its own weight , i suspect the calculation of elonation due to its own weight is wrong .....

    2. Relevant equations


    3. The attempt at a solution
    I think it should be (3456.3825)(75) / (300x10^-6)(200x10^3) = 4320m = 4320x10^3 mm , right ?
     

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  2. jcsd
  3. Sep 17, 2016 #2

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    Four kilometers?!
     
  4. Sep 17, 2016 #3
    anything wrong with my calculation ?
     
  5. Sep 17, 2016 #4

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    Given that the original length is only 150 meters? What's your conclusion?
     
  6. Sep 17, 2016 #5
    sorry , here's the second image
     

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  7. Sep 17, 2016 #6

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    You've made mistake(s) in the conversion to meters (handwritten work, 2nd image). Try it again.
     
  8. Sep 17, 2016 #7
    I'm looking at the units of E in his calculation, and it doesn't seem correct to me.
     
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