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A steel wire of negligible mass length L...

A steel wire of negligible mass length `L_0` and cross sectional area `A_0` is kept on a smooth horizontal table with one end fixed. A ball of mass M is attached to the other end. The wire and ball are rotating with angular velocity `omega` . If elongation in the wire is `DeltaL`, then the value of Young's modulus of elasticity will be

A

`(ML_0^2omega^2)/(A_0DeltaL)`

B

`(MA_0omega^2)/(L_0^2Delta)`

C

`(ML_0^3omega^2)/(A_0(DeltaL)^2)`

D

none of the above

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The correct Answer is:
A
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