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April 19, 2014

Homework Help: physics

Posted by Anonymous on Friday, April 6, 2012 at 5:43pm.

a) Suppose a bimetallic strip is constructed of copper and steel strips of thickness 1.1 mm and length 29 mm, and the temperature of the strip is reduced by 5.1 K. Determine the radius of curvature of the cooled strip (the radius of curvature of the interface between the two strips). (The linear expansion coefficients for copper ans steel are 1.70 10-5 C−1 and 1.30 10-5 C−1, respectively.)
b) If the strip is 29 mm long, how far is the maximum deviation of the strip from the straight orientation? (The deviation is measured from the straight orientation from the interface of the two strips.)

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