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Question

A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 200kN. If the length of the bar is 2m and E = 200GPa, the contraction of the bar will be

A
1.25mm
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B
2.70mm
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C
4.05mm
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D
5.40mm
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Solution

The correct option is A 1.25mm
We know that
ΔL = PLAE = 200×103×2×10340×40×200×103 = 1.25 mm

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