A steel wire having a radius of 2.0 mm carrying a load of 4 kg is hanging from a ceiling.

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asked Sep 12 in Science by priya12 (-12,583 points)

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 

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1 Answer

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answered Sep 12 by navnit40 (-4,766 points)

Correct option  (4) 3.1 x 106 Nm–2 

Explanation:

Stress = Mg/ πr2 = 4(3.1π)/π4 x 10-6

= 3.1 x 106 N/m2

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