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A horizontal thin copper ring has a diameter exactly 1.00000 inch at temperature 0^(@)C and is ficed to a non conducting stand. An aluminium sphere of diameter exactly 1.00200 inch at 100^(@)C is placed on the top of the ring. When the two attain temperature equilibrium, the sphere just passes through the ring. Assuming that the whole heat energy remains within the ring sphere system find (alpha_(Cu)=1.67xx10^(-5).^(@)C^(-1), alpha_(Al)=2.4xx10^(-4).^(@)C^(-1)) (i) the final equilibrium temperature (ii) the ratio of the mass of the ring to that of the sphere. |
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