4. A copper bar 250 mm long and 50mmx50mm in cross-section is subjected toan axial pull in the direction of its length. If the increase in volume of the bar is37.5 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 anaxial pull of 200 KN. What are the changes in length, width and volume of thebar, if the value of Poisson s ratio is 0.3 ? Take E as 200 GPa. AnswerAl-0.48mm, Ab-0.006mm and AV-480 mm'.6. A reetangular bar 500 mm long and 100mmx50mm in cross-section issubjected to forces as shown in figure. What is the change in the volume of thebar? Take modulus of elasticity for the bar material as 200 GPa and p-0.25.Answer :AV-137.5 mm'.300 KN100 KN50100200 KN500 mm

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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

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.

Question

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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