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A steel wire having a radius of 2.0mm, c...

A steel wire having a radius of `2.0mm`, carrying a load of `4kg`, is hanging from a celling. Given that `g=3.1pi ms^(-2)`, what will be the tensile stress that would be developed in the wire?

A

`3.1xx10^(6)Nm^(-2)`

B

`4.8xx10^(6)Nm^(-2)`

C

`5.2xx10^(6)Nm^(-2)`

D

`6.2xx10^(6)Nm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Stress = `("load")/("area")=(mg)/(pir^2)`
`=(4xx3.1pi)/(pixx(2xx10^(-3))^2)`
`=3.1xx10^6N//m^2`
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