Question: Before the 400-kN load is applied, the rigid platform rests on two steel bars, each of cross-sectional area 1400 mm, as shown in the

Before the 400-kN load is applied, the rigid platform rests on two

Before the 400-kN load is applied, the rigid platform rests on two steel bars, each of cross-sectional area 1400 mm, as shown in the figure. The cross-sectional area of the aluminum bar is 2800 mm. Compute the stress in the aluminum bar after the 400-kN load is applied. Use E = 200 GPa for steel and E= 70 GPa for alumi- num. Neglect the weight of the platform. Steel 0.1 mm Aluminum 400 KN Steel -250 mm - +

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