Test Academy | A uniform heavy rod of weight W, cross sectional area A and length L is hung from a fixed support. Young’s modulus of the material of the rod is Y. If lateral contraction is neglected, the elongation of the rod under its own weight is 2WL/AY, WL/AY, WL/2AY, Zero

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A uniform heavy rod of weight W, cross sectional area A and length L is hung from a fixed support. Young’s modulus of the material of the rod is Y. If lateral contraction is neglected, the elongation of the rod under its own weight is

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2WL/AY
WL/AY
WL/2AY
Zero

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