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Homework Help: Radius of curvature usng: M/I= σ/Y = E/R

  1. Aug 10, 2010 #1
    Question:

    How do I use this formula to find the Radius of curvature?

    Formula:

    M/I= σ/Y = E/R (M = bending moment, I = second moment of aria, σ = stress, y = distance from nutral axia, E = modulus of elasticity & R = radius of curvature)

    Attempt:

    In this question, I have all of the values except the radius of curvature, but I dont understand how to use this formula. If someone could rearrange the formula for me and post it, it would be much apriciated.

    Thanx
     
  2. jcsd
  3. Aug 10, 2010 #2

    rock.freak667

    User Avatar
    Homework Helper

    They are all equal to one another. But if you have to use them to solve anything, you need to use any pair of the equations. For example, I could use

    M/I = σ/y OR M/I=E/R
     
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