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A steel rod of length 5 m is fixed betwe...

A steel rod of length `5 m` is fixed between two support. The coefficient of linear expansion of steel is `12.5 xx 10-6//^(@)C`. Calculate the stress (in `10^(8) N//m2`) in the rod for an increase in temperature of `40^(@)C`. Young's modulus for steel is `2 xx 10^(11) Nm^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
A
Thermal stress `= YalphaDeltaT`
`= 2 xx 10^(11) xx 12.5 xx 10^(-6) xx 40 = 1 xx 10^(8) N//m^(2)`
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