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Q.

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?

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a

5.2×106Nm−2

b

4.8×106Nm−2

c

6.2×106Nm−2

d

3.1×106Nm−2

answer is D.

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Detailed Solution

σ=4×3.1ππ(2×10−3)2=3.1×106 Nm−2
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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?