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A structural steel rod has a radius r(=1...

A structural steel rod has a radius r(=10 mm) and a length l(=1 m). When a force F(= 100 kN) is applied, it stretches it along its length. Young's modulus of elasticity of the structural steel is `2.0xx10^(11) Nm^(-2)`.
What is the elongation produced ?

A

`1.59` mm

B

`2.32` mm

C

`0.159` mm

D

`3.18` mm

Text Solution

Verified by Experts

The correct Answer is:
A
`Delta l=(Fl)/(AY) =3.18xx10^(8) xx(1)/(2xx10^(11))`
`=1.59xx10^(-3)m =1.59 mm`
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