Question: A rectangular block (250 mathrm{~mm} times 100 mathrm{~mm} times 50 mathrm{~mm}) is subjected to the following state of stress. [ sigma_{x}=100 mathrm{MPa}, sigma_{y}=-60 mathrm{MPa}, sigma_{z}=80

A rectangular block \(250 \mathrm{~mm} \times 100 \mathrm{~mm} \times 50 \mathrm{~mm}\) is subjected to the following state of stress.

\[ \sigma_{x}=100 \mathrm{MPa}, \sigma_{y}=-60 \mathrm{MPa}, \sigma_{z}=80 \mathrm{MPa} \]

If \(\mathrm{v}=0.25\) and \(E=200 \mathrm{GPa}\), determine its change in volume.

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