The magnitude of force developed by raising the temperature from 0oC to 100oC of an iron bar 1m long and of 1 cm2 cross section when it is held between two rigid walls so that it is not permitted to expand is α=10−5/oC and Y=1011N/m2
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Detailed Solution
Induced compressive force =Thermal stress X cross section ∴F=Yα.ΔθS=1011×10−5×100×10−4N=104N
The magnitude of force developed by raising the temperature from 0oC to 100oC of an iron bar 1m long and of 1 cm2 cross section when it is held between two rigid walls so that it is not permitted to expand is α=10−5/oC and Y=1011N/m2