Question
A metal bar of length L and area of cross-section A is clamped between two rigid supports. For the material of the rod, its Young’s modulus is Y and coefficient of linear expansion is α. If the temperature of the rod is increased by Δt°C, the force exerted by the rod on the supports is
Options :
Y AL Δt
Y AL α Δt
YL α Δt/A
Y α AL Δt
Answer :
Y AL α Δt
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