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A body of mass 3.14 kg is suspended form...

A body of mass 3.14 kg is suspended form one end of a wire of length 10.0m. The radius of the wire is changing uniformly from `9.8 times 10^-4 m` at one end to `5.0 times 10^-4 m` at the other end. Find the change in the length of the wire in mm. Young's modulus of the material of the wire is `2 times 10^11 N.m^-2`.

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