Questions
A steel rod of length 1m is heated from 25°C to 75°C keeping its length constant. The longitudinal strain developed in the rod is (Given: Coefficient of linear expansion of steel = 12 x )
detailed solution
Correct option is C
Due to the Expansion of the rod due to heating it, the rod develops a strain, trying to resist the change in length. Thus the strain tends to reduce the length of the rod.Strain ⇒ ∆LL = Lα∆θL ⇒ α∆θStrain ⇒-12 ×10-6×50⇒-6×10-4Talk to our academic expert!
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A steel rod of length 5 m is fixed rigidly between two supports. of steel , With the increase in its temperature by . the stress developed in the rod is
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