Question

How do we use the gradient of the line to find young's mod?

Answer 1

Please find the graph shown below.

Answer 2

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Modulus =(σ2 - σ1) / (ε2 - ε1) where stress (σ) is force divided by the specimen's cross-sectional area and strain (ε) is the change in length of the material divided by the material's original gauge length.