A mass m kg is whirled in a vertical plane by tying it at the end of a flexible wire of length l and area of cross section 'A'. When the mass is at its lowest position the strain produced in the wire is, if Young’s modulus of the wire is 'Y' (if V= √5gl)
(1) AY/6mg
(2) 6mg/AY
(3) 5mg/AY
(4) AY/5mg