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Can someone please explain this example about cantilever beams

  1. Oct 24, 2011 #1
    This might look a bit stupid but I have just started beams and I can't understand a part in this example it is to do with finding a general equation of the height at any given point on a tapered cantilever beam can someone please explain

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    Last edited: Oct 24, 2011
  2. jcsd
  3. Oct 24, 2011 #2


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    The height of the beam at a distance x from point A is given by the relation h(x) = 2 +(x/L)

    You can use this relation to check the given heights of the beam at A and B, which are 2 in and 3 in, respectively.

    The relation is already developed and given to you. I suspect the problem is asking you to do something besides developing this relation.
  4. Oct 24, 2011 #3
    I understand that the relationship has been developed, the part I am confused about is that how he has derived this relationship.
  5. Oct 24, 2011 #4


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    If you draw the graph of h against x, it is straight line.

    So the relationship is the equation of the straight line through the points (0,ha) and (L,hb).

    Plug the values into the standard equation for a line in the form (y-y0) = m(x-x0).

    x0 = 0, y0 = ha, and the slope m = (hb-ha)/L.
  6. Oct 24, 2011 #5
    Thank you that really helped
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