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physics

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The Young's modulus for steel is 2x1011 and its rigidity modulus is 8x1010 Nm-2. Find the Poisson's ratio and its bulk modulus.

  • physics - ,

    How is this a challenge?
    a google search shows up the simple formula

    E=2G(r+1)

    2*10^11 = 2*8*10^10(r+1)
    1/8 * 10 = r+1
    1.25 = r+1
    0.25 = r

  • physics - ,

    Also, for Bulk modulus K,

    E = 3K(1-2r)
    2*10^11 = 3K(1-2*.25)
    2*10^11 = 1.5K
    K = 1.33*10^11

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