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A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1 π ms –2 , what will be the tensile stress that would be developed in the wire ?

1. 5.2 × 10 6 Nm –2
2. 6.2 × 10 6 Nm –2
3. 4.8 × 10 6 Nm –2
4. 3.1 × 10 6 Nm –2

Correct answer: 3.1 × 10 6 Nm –2

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