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Statement of a problem № 3581

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A 20 m long steel rail is firmly attached to the road bed only at its ends. The sun raises the temperature of the rail by 30°C, causing the rail to buckle. Assuming that the buckled rail consists of two straight parts meeting in the centre, calculate how much the centre of the rail rises? For steel a = 12x 10^(-6) /°C.

Solution:
A 20 m long steel rail is firmly attached to the road bed only at its ends. The

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