Chapter 26 of 2363 min read

Young's, bulk and shear moduli; Poisson's ratio

Why this is asked: Young's modulus and shear modulus are defined only for solids — a liquid or gas can't sustain a shape-restoring shear or tensile stress, so only the bulk modulus applies to fluids.

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Test yourself

•The maximum elongation of a steel wire of 1 m length, if the elastic limit of steel and its Young's modulus are respectively $8 \times 1 0^{8} N m^{- 2}$ and $2 \times 1 0^{11} N m^{- 2}$ , is:

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