A metal rod of Young's modulus Y and coefficient of linear expansion α is held at its two ends such that its length remains constant on changing the temperature. If its temperature is raised by t ° C , the thermal stress developed in it is

Question

A metal rod of Young's modulus Y and coefficient of linear expansion α is held at its two ends such that its length remains constant on changing the temperature. If its temperature is raised by t ° C , the thermal stress developed in it is, α t Y, Y α E, Y α t, 1 Y α t

MARKS App · Accepted Answer

Linear expansion ∆ L = α L ∆ T = F L A Y ⇒ α t = F A Y Stress = F A = Y α t

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