
(a)
The ultimate tensile stress of metal specimen.

Answer to Problem 1.5.1P
Explanation of Solution
Given:
The diameter of metal specimen is
The load at facture is
Concept Used:
Write the equation to calculate the ultimate tensile stress.
Here, ultimate tensile stress is
Calculation:
Calculate the cross-sectional area of specimen.
Here, diameter of the specimen is
Substitute
Calculate the ultimate tensile stress.
Substitute
Conclusion:
Thus, the ultimate tensile stress on the metal specimen is
(b)
The elongation of the metal specimen.

Answer to Problem 1.5.1P
Explanation of Solution
Given:
The original gage length is
The change in gage length is
Concept Used:
Write the equation to calculate the elongation.
Here, the elongation is
Calculation:
Calculate the elongation of the metal specimen.
Substitute
Conclusion:
Thus, the elongation of the metal specimen is
(c)
The reduction in the cross-sectional area of the metal specimen.

Answer to Problem 1.5.1P
Explanation of Solution
Given:
The original diameter of metal specimen is
The diameter after fracture load is
Concept Used:
Write the equation to calculate reduction in cross-sectional area.
Here, the reduction in cross-sectional area is
Calculation:
Calculate the cross-sectional area after fracture load.
Substitute
Calculate the reduction in the cross-sectional area.
Substitute
Conclusion:
Thus, the reduction in the cross-sectional area is
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Chapter 1 Solutions
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