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A steel bar is 1 0 0 m m long, and has a 2 0 m m by 1 0 mm cross - sectional area.
A steel bar is long, and has a by mm crosssectional area. It has Young's modulus of GPa, Poisson's ratio of and subjected to:
A tensile load of along its face,
ii A compressive load of on its mmface, and
iii. A tensile load of on its face.
Find:
a the change in volume of the bar;
b what the compressive load has to be raised to so that there is no change from the original volume.
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