1.

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

Answer»

`(ML_0^2omega^2)/(A_0DeltaL)`
`(MA_0omega^2)/(L_0^2Delta)`
`(ML_0^3omega^2)/(A_0(DELTAL)^2)`
NONE of the above

ANSWER :A


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