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Two straight thin bars, one of brass and...

Two straight thin bars, one of brass and the other of steel are joined together side by side by short steel cross-pieces at `0^(@)C`, one cm long, the centre lines of the bars being one cm apart. When heated to `100^(@)C`, the composite bar becomes bent into the arc of a circle. Calculate the radius of this circle. `alpha` for brass = `19xx10^(-6)per""^(@)C,andalpha` for steel = `11xx10^(-6)per""^(@)C`,

Text Solution

Verified by Experts

R = `(d)/((alpha_(1) - alpha_(2))Delta t) = 125.8 ` cm
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