Prob.7: [2.55] At room temperature (20°C) a 0.5 mm gap exists between the ends of the rods shown. At a later time when the temperature has reached 140°C, determine (a) the normal stress in the aluminum rod, (b) the change in length of the aluminum rod. 0.5 mm 300 mm 250 mm В Aluminum A = 2000 mm E = 75 GPa a = 23 x 10-6°C a = 17.3 x 10-6°C Stainless steel A = 800 mm2 E = 190 GPa

Prob.7: [2.55] At room temperature (20°C) a 0.5 mm gap exists between the ends of the rods shown. At a later time when the temperature has reached 140°C, determine (a) the normal stress in the aluminum rod, (b) the change in length of the aluminum rod. 0.5 mm 300 mm 250 mm В Aluminum A = 2000 mm E = 75 GPa a = 23 x 10-6°C a = 17.3 x 10-6°C Stainless steel A = 800 mm2 E = 190 GPa

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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Question

Prob.7:
[2.55] At room temperature (20°C) a 0.5 mm gap exists between the
ends of the rods shown. At a later time when the temperature has reached
140°C, determine (a) the normal stress in the aluminum rod, (b) the change
in length of the aluminum rod.
0.5 mm
300 mm
250 mm
В
Aluminum
A = 2000 mm
E = 75 GPa
a = 23 x 10-6°C a = 17.3 × 10-6PC
Stainless steel
A = 800 mm2
E = 190 GPa

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