Test Academy | 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 Y AL Δt, Y AL α Δt, YL α Δt/A, Y α AL Δt

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

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Y AL Δt
Y AL α Δt
YL α Δt/A
Y α AL Δt

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