The stepped rod shown in the figure is made of Al 2014-T6 aluminum alloy. At temperature T1 = 20°C, there is a gap of 0.2 mm between point A and the rigid wall. If the temperature is increased to T2-50°C and an axial compressive force of P= 20 kN is applied at point B, determine the support reactions at points A and C. Ay 80 mm B C A 20 kN 120 mm 400 mm 600 mm

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