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4. A copper bar 250 mm long and 50mmx50mm in cross-section is subjected to an axial pull in the direction of its length. If the increase in volume of the bar is 37.5 mm, find the magnitude of the pull. Take p-0.25 and E-100GP.. Answer : P-30 KN.

4. A copper bar 250 mm long and 50mmx50mm in cross-section is subjected to an axial pull in the direction of its length. If the increase in volume of the bar is 37.5 mm, find the magnitude of the pull. Take p-0.25 and E-100GP.. Answer : P-30 KN.

Structural Analysis
Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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4. A copper bar 250 mm long and 50mmx50mm in cross-section is subjected to an axial pull in the direction of its length. If the increase in volume of the bar is 37.5 mm', find the magnitude of the pull. Take p-0.25 and E-100GPA. Answer: P-30 KN. 5. A steel bar 50mmx50mm in cross-section is 1.2 m long. It is subjected to an axial pull of 200 KN. What are the changes in length, width and volume of the bar, if the value of Poisson s ratio is 0.3 ? Take E as 200 GPa. Answer Al-0.48mm, Ab-0.006mm and AV-480 mm'. 6. A reetangular bar 500 mm long and 100mmx50mm in cross-section is subjected to forces as shown in figure. What is the change in the volume of the bar? Take modulus of elasticity for the bar material as 200 GPa and p-0.25. Answer :AV-137.5 mm'. 300 KN 100 KN 50 100 200 KN 500 mm
Transcribed Image Text:4. A copper bar 250 mm long and 50mmx50mm in cross-section is subjected to an axial pull in the direction of its length. If the increase in volume of the bar is 37.5 mm', find the magnitude of the pull. Take p-0.25 and E-100GPA. Answer: P-30 KN. 5. A steel bar 50mmx50mm in cross-section is 1.2 m long. It is subjected to an axial pull of 200 KN. What are the changes in length, width and volume of the bar, if the value of Poisson s ratio is 0.3 ? Take E as 200 GPa. Answer Al-0.48mm, Ab-0.006mm and AV-480 mm'. 6. A reetangular bar 500 mm long and 100mmx50mm in cross-section is subjected to forces as shown in figure. What is the change in the volume of the bar? Take modulus of elasticity for the bar material as 200 GPa and p-0.25. Answer :AV-137.5 mm'. 300 KN 100 KN 50 100 200 KN 500 mm
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