Question

2) A bimetallic strip is made of copper and steel fused together. The length of each piece is 23 cm at 25 Celsius and the thickness of the copper is .6mm and the steel is .8mm.

a) If the temperature of the strip goes from 25 to 35 Celsius, what is the subtended angle of the arc that the strip makes? [Assume that the thickness does not change appreciably compared to the length of the pieces]

b) To what temperature should the strip be heated so that it curls up to the shape of a complete circle?

Answer 1

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