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A bar of heated to a tempature of 500^(@...

A bar of heated to a tempature of `500^(@)`C Its ends are are then clamped at two points 1 m apart and it is allowed to cool .Find the temperate at which at which it will break ,assuming linear expensivity of steel `=11xx10^-6) //K,`Young's modulus of steel `=2xx10^(11) ""Nm^(-2)` and braking stress for steel `=8xx10^(8) ""Nm^(-2)`

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The correct Answer is:
`134.4^(@)`
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