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A wire has a cross sectional area 'A', length 'L' and young's modulus 'Y'. It is pulled by a force 'F' which causes a total extension of length 'l'. The force F is so adjusted that the wire is only slowly stretched. Find the work done by the force in pulling the string by a length 'dx' when extension is x (0 > x > l).

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MCQs on solids elastic behaviour, stress and strain mechanical properties, hookes law, stress-strain curve, elastic moduli and materials elastic behaviour.


A wire has a cross sectional area 'A', length 'L' and young's modulus 'Y'. It is pulled by a force 'F' which causes a total extension of length 'l'. The force F is so adjusted that the wire is only slowly stretched. Find the work done by the force in pulling the string by a length 'dx' when extension is x (0 > x > l).






 
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