H.W.13 Determine the horizontal movement of point A of Figure 1 due to a temperature increase of 75°C. Assume that member AE has a negligible coefficient of thermal expansion. The coeffi- cients of thermal expansion are 11.9 x 10-6/°C for the steel and 22.5 x 10-6/°C for the aluminum alloy. A 250 mm В Steel 25 mm D Aluminum E 300 mm FIGURE 1

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