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A brass disc is fitted tightly into the ...

A brass disc is fitted tightly into the bore of a steel plate. Should you apply heat in order to remove the disc from the bore? Given that `alpha` of brass `=19 times 10^(-6@)C^(-1)` and that of steel `=12 times 10^(-6@)C^(-1)`.

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A brass dise fits tightly into the bore of steel palte. Should you apply heat in order to remove the disc from the bore?

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Coefficient of linear expansion of iron is 12 times 10^(-6@)C^(-1) - explain the statement.

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A steel ring is heated up to 95^(@)C to fit exacty on the outer surface of an iron cylinder of diameter 10 cm at 20^(@)C. After fitting, the ring is cooled so that the system attains a temperature 20^(@)C. What is the thermal stress of the ring? [Young's modulus of steel = 21 times 10^(5)kg*cm^(-2) " and " alpha for steel =12 times 10^(-6@)C^(-1).]