A steel rail, rigidly fixed at its ends is assumed to be stress free at 20°C. If the stress required to cause the buckling of the rail is -75 Mpa, at what temperature will the rail buckle? (E = 200 GPa and a = 12.5 x 106/°C) 1. -10°C 2. 50°C 3. 30°℃ 4 80°C

A steel rail, rigidly fixed at its ends is assumed to be stress free at 20°C. If the stress required to cause the buckling of the rail is -75 Mpa, at what temperature will the rail buckle? (E = 200 GPa and a = 12.5 x 106/°C) 1. -10°C 2. 50°C 3. 30°℃ 4 80°C

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.5.1P: The rails of a railroad track are welded together at their ends (to form continuous rails and thus...

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Question

A steel rail, rigidly fixed at its ends is assumed to be stress free at 20°C. If the stress required to
cause the buckling of the rail is -75 Mpa, at what temperature will the rail buckle? (E = 200 GPa
and a = 12.5 x 106/°C)
1. -10°℃
2. 50°C
3. 30°C
4. 80°C

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