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Math Help - Help in Application of integration.

  1. #1
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    Help in Application of integration.

    Hello,
    Can anyone check if my answer for part (a) is correct and help me out for part (b)?

    Below is the question and answers :.

    Thanx you very much..
    Attached Thumbnails Attached Thumbnails Help in Application of integration.-ques2.jpg   Help in Application of integration.-ans10001.jpg  
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  2. #2
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    That looks correct. You could simplify the result a bit, to write it in the form y=\frac{W}{24EI}(3lx^2-2x^3-l^3).

    For (b), the maximum deflection occurs when x=0. So just put x=0 in the answer to (a).
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  3. #3
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    yeah but what to do with the value of E,I and W?
    where do i get them please?
    thx
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  4. #4
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    Quote Originally Posted by NiCeBoY View Post
    yeah but what to do with the value of E,I and W?
    where do i get them please?
    thx
    You dont get them
    You leave them as it is... The answer is supposed to be in terms of them
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  5. #5
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    oh ...
    i thought we need to remove W because it is said in the question that we should neglect the weight of the beam.

    so the answer for the second part is :
    <br />
y=-\frac{WL^3}{24EI}<br />


    This is the final answer yeah?

    Thanks
    Last edited by mr fantastic; May 19th 2009 at 07:14 AM. Reason: Merged posts
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  6. #6
    Lord of certain Rings
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    Quote Originally Posted by NiCeBoY View Post
    so the answer for the second part is :
    <br />
y=-\frac{WL^3}{24EI}<br />


    This is the final answer yeah?

    Thanks
    Yes! They said "neglect the weight of beam" not the weight of the load
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  7. #7
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    ah thanks bro.
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