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An aluminium plate fixed in a horizontal position has a hole of diameter 2.000 cm. A steel sphere of diameter 2.005 cm rests on this hole. All the lengths refer to a temperature of 10∘ C. The temperature of the entire system is slowly increased. At what temperature will the ball fall down ? Coefficient of linear expansion of aluminium is 23×10−6 ∘C−1 and that of steel is 11×10−6 ∘C−1. |
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Answer» An aluminium plate fixed in a horizontal position has a hole of diameter 2.000 cm. A steel sphere of diameter 2.005 cm rests on this hole. All the lengths refer to a temperature of 10∘ C. The temperature of the entire system is slowly increased. At what temperature will the ball fall down ? Coefficient of linear expansion of aluminium is 23×10−6 ∘C−1 and that of steel is 11×10−6 ∘C−1. |
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