A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1π ms–2 , what will be the tensile stress that would be developed in the wire ?
(1) 5.2 x 106 Nm–2
(2) 6.2 x 106 Nm–2
(3) 4.8 x 106 Nm–2
(4) 3.1 x 106 Nm–2