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Differential Equation Issue

  1. Oct 18, 2009 #1
    1. The problem statement, all variables and given/known data

    I need to integrate this problem, I am not sure what it is but I am having trouble doing this simple problem and coming up with the right answer. Its been awhile since I had diff eq..

    Solve for w as a function of x

    0 = g + [tex]\upsilon[/tex] (d2w / dx2)

    g, [tex]\upsilon[/tex] = constant

    2. Relevant equations

    Problem Solution:

    w = (g/[tex]\upsilon[/tex])(bx - x2/2)

    3. The attempt at a solution

    I am assuming that I need to move stuff to each side and complete the double integrals and solve for w

    something along these lines:

    -g dx2 = [tex]\nu[/tex] d2w

    I would love it if someone could give me a nudge.
  2. jcsd
  3. Oct 18, 2009 #2


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    Science Advisor
    Homework Helper

    It's really easy. You've got w''(x)=(-g/v). Just integrate both sides with respect to x twice. Don't forget the constants of integration. You should then realize the problem solution isn't the most general one.
  4. Oct 18, 2009 #3
    Thank you Dick, I knew that I was making this stupid problem much harder then it should be put I just couldnt wrap my head around it.
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