2.77 A steel rod 3 ft long with a cross-sectional area of 0.3 in.² is stretched between two fixed points. The tensile force in the rod is 1200 lb at 40°F. Using a = 6.5 x 10-6/°F and E = 29 × 106 psi, calculate the temperature at which the stress in the rod will be (a) 10 ksi; and (b) zero.

2.77 A steel rod 3 ft long with a cross-sectional area of 0.3 in.² is stretched between two fixed points. The tensile force in the rod is 1200 lb at 40°F. Using a = 6.5 x 10-6/°F and E = 29 × 106 psi, calculate the temperature at which the stress in the rod will be (a) 10 ksi; and (b) zero.

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

2.77 A steel rod 3 ft long with a cross-sectional area of 0.3 in.² is stretched
between two fixed points. The tensile force in the rod is 1200 lb at 40°F. Using a =
6.5 x 10-6/°F and E = 29 × 106 psi, calculate the temperature at which the stress in
the rod will be (a) 10 ksi; and (b) zero.

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