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is it okay to solve this even if it is not in equilibrium? Why?

is it okay to solve this even if it is not in equilibrium? Why?

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
Problem 1.1MA
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Someone already solved this and the answr is .0212 and -0.025. My question is is it okay to solve this even if it is not in equilibrium? Why?

1.0 The composite shaf, consisting of aluminum, copper, and steel sections, is subjected to the loading shown. Determine the displacement of end A with respect to end and the normal stress in each section. The cross sectional area and modulus of elasticity for each section are shown in the figure. Neglect the size of the collars at B and C. Also, determine the displacement of B with respect to C of the composite shaft. Aluminum Copper Eeu = 18(10°) ksi ABC = 0.12 in? Steel E = 10(103) ksi AAB = 0.09 in? E = 29(103) ksi AcD = 0.06 in? 3.75 kip 2.00 kip 3.00 kip 1.50 kip BL 3.75kip D 2.00kip 18 in.- 12 in.- 16 in:
Transcribed Image Text:1.0 The composite shaf, consisting of aluminum, copper, and steel sections, is subjected to the loading shown. Determine the displacement of end A with respect to end and the normal stress in each section. The cross sectional area and modulus of elasticity for each section are shown in the figure. Neglect the size of the collars at B and C. Also, determine the displacement of B with respect to C of the composite shaft. Aluminum Copper Eeu = 18(10°) ksi ABC = 0.12 in? Steel E = 10(103) ksi AAB = 0.09 in? E = 29(103) ksi AcD = 0.06 in? 3.75 kip 2.00 kip 3.00 kip 1.50 kip BL 3.75kip D 2.00kip 18 in.- 12 in.- 16 in:
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