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A uniform copper bar of density rho, len...

A uniform copper bar of density `rho`, length `L`, cross-sectional area `S` and Young's modulus `Y` is moving on a frictionless horizontal surface with constant acceleration `a_(0)`. If total elongation in the wire is `(rhoa_(0)L_(2))/(lambdaY)` then find `lambda`.

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The correct Answer is:
`2`
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