3. A 5-m rod having a uniform cross-sectional area of 1000 sq.mm. is secured between two walls 5 meters apart. The load on the rod is zero at 27 °C. E = 200 GPa, a = 11.25x10“ m/m-°C. When the temperature rises to 57°C: a) What is the stress in the rod assuming that the walls are rigid. b) What is the stress in the rod if the walls spring together a total distance of o.5 mm.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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3. A 5-m rod having a uniform cross-sectional area of 1000 sq.mm. is secured between two walls
5 meters apart. The load on the rod is zero at 27 °C. E = 200 GPa, a = 11.25x106 m/m-°C. When
the temperature rises to 57°C:
a) What is the stress in the rod assuming that the walls are rigid.
b) What is the stress in the rod if the walls spring together a total distance of o.5 mm.
Transcribed Image Text:3. A 5-m rod having a uniform cross-sectional area of 1000 sq.mm. is secured between two walls 5 meters apart. The load on the rod is zero at 27 °C. E = 200 GPa, a = 11.25x106 m/m-°C. When the temperature rises to 57°C: a) What is the stress in the rod assuming that the walls are rigid. b) What is the stress in the rod if the walls spring together a total distance of o.5 mm.
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