Mathematics · Strength of Materials
A prismatic bar with a rectangular cross-section of 20 mm × 40 mm and a length of 2.8 m is subjected to an axial tensile force of 70 kN. If the elongation of the bar is 1.2 mm, what are the tensile stress and tensile strain of the bar respectively?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 187.5 MPa, 0.00428
- 28.75 MPa, 0.00428
- 387.5 MPa, 0.000428✓
- 48.75 MPa, 0.000428
Correct answer
87.5 MPa, 0.000428
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