railway RRB JE (CBT I + CBT II) Mock Test 2024 Strength of Materials Simple Stress and Strain

A steel bar of 20 mm × 20 mm square cross-section is subjected to an axial compressive load of 100 kN. If the length of the bar is 4 m and E = 200 GPa, what will be the elongation of the bar?

1
5 mm
2
2.5 mm
3
10 mm
4
1.25 mm
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