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Elasticity

Three bars of...

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Three bars of copper ( modulus of elasticity Y)having length L and 2L and 3 l and area of cross section A, 2A and 3A are joined rigidly end-to-end compound rod subjected to a stretching force f find the net modulus of elasticity of the system of wires.

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Q. Three bars having lengths l, 2l and 3l and area of cross-section A, 2A and 3A are joined rigidly end to end. Compound rod is subjected to a stretching force F. The increase in length of rod is (Young's modulus of material is Y and bars are massless)

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