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Problem 2. A steel bar AD (see figure) has a cross-sectional area of 258 mm² and is loaded by forces P₁ = 12 kN, P2=8 kN, and P3 = 5.8 kN. The lengths of the segments of the bar are a =1.52 m, b = 0.61 m, and c= 0.91 m. (a) Assuming that the modulus of elasticity E=207 GPA, calculate the change in length 5 of the bar. Does the bar elongate or shorten? (b) By what amount P should the load P3 be increased so that the bar does not change in length when the three loads are applied? B P₁ C P₂ D

Problem 2. A steel bar AD (see figure) has a cross-sectional area of 258 mm² and is loaded by forces P₁ = 12 kN, P2=8 kN, and P3 = 5.8 kN. The lengths of the segments of the bar are a =1.52 m, b = 0.61 m, and c= 0.91 m. (a) Assuming that the modulus of elasticity E=207 GPA, calculate the change in length 5 of the bar. Does the bar elongate or shorten? (b) By what amount P should the load P3 be increased so that the bar does not change in length when the three loads are applied? B P₁ C P₂ D

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Parvinbhai 

Problem 2. A steel bar AD (see figure) has a cross-sectional area of 258 mm² and is loaded by forces P₁ = 12 kN, P2=8 kN, and P3 =5.8 kN. The lengths of the segments of the bar are a = 1.52 m, b = 0.61 m, and c= 0.91 m. (a) Assuming that the modulus of elasticity E=207 GPa, calculate the change in length of the bar. Does the bar elongate or shorten? (b) By what amount P should the load P3 be increased so that the bar does not change in length when the three loads are applied? B P₁ P₂ -P3
Transcribed Image Text:Problem 2. A steel bar AD (see figure) has a cross-sectional area of 258 mm² and is loaded by forces P₁ = 12 kN, P2=8 kN, and P3 =5.8 kN. The lengths of the segments of the bar are a = 1.52 m, b = 0.61 m, and c= 0.91 m. (a) Assuming that the modulus of elasticity E=207 GPa, calculate the change in length of the bar. Does the bar elongate or shorten? (b) By what amount P should the load P3 be increased so that the bar does not change in length when the three loads are applied? B P₁ P₂ -P3
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