A steel wire of length 2L and cross-sect...

A steel wire of length 2L and cross-section area A is stretched, wetl within elastic limit horizontally between two pillars, a mass m is suspended from the mid-point of wire such that depression at the middle is X. Strain in the wire is proportional to

`X^2`/L

X/L

`X^2`/`L^2`

X/`L^2`

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