(Solved): The distributed loading is supported by the three suspender bars. \( A B \) and \( E F \) are made ...

The distributed loading is supported by the three suspender bars. \( A B \) and \( E F \) are made of aluminum and \( C D \) is made of steel. Each bar has a cross-sectional area of \( 400 \mathrm{~mm}^{2} . E_{\text {st }}=200 \) \( \mathrm{GPa}, E_{\mathrm{al}}=70 \mathrm{GPa} \). Assume \( A C E \) is rigid. (Figure 1) Dotermine the maximum intensity w of the distributed loading so that an allowable stress of \( \left(\sigma_{a l l o w}\right)_{i t}=180 \mathrm{MPa} \) in the steed and \( \left(\sigma_{\text {alisw }}\right)_{\mathrm{a}}=94 \mathrm{MPa} \) in the aluminum is not exceeded. Express your antwer to three significant figures and include the appropriate unite.