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A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 200 kN. If the length of the bar is 2 m and E = 200 GPa, the elongation of the bar will be:
  • a)
    1.25 mm
  • b)
    2.70 mm
  • c)
    4.05 mm
  • d)
    5.40 mm
Correct answer is option 'A'. Can you explain this answer?
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A steel bar of 40 mm × 40 mm square cross-section is subjected t...

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Diameter and 2 meters in length has a cross-sectional area of approximately 1,256.64 square millimeters. The weight of the steel bar would depend on the specific type of steel used, but assuming it is plain carbon steel with a density of 7.85 g/cm³, the weight of the bar would be approximately 98.16 kilograms.
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A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 200 kN. If the length of the bar is 2 m and E = 200 GPa, the elongation of the bar will be:a)1.25 mmb)2.70 mmc)4.05 mmd)5.40 mmCorrect answer is option 'A'. Can you explain this answer?
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