For the beam shown above with length L = 7 m with the applied uniformly distributed load of w = 18 kN/m, what is the maximum bending stress if the beam has a cross section with the following dimensions: b = 100 mm d = 250 mm tf = 20 mm tw = 15 mm                  𝜎 𝑏 𝑒 𝑛 𝑑 𝑖 𝑛 𝑔 = ____MPa Round to one decimal place简答题

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Given a simply supported beam with length L =8.4m, and load W =7 kN, find the bending stress \sigma at the top of the section in the midspan of the beam, remember to show if this stress is compressive or tensile. The elastic modulus for the top is z_e =571733.2 mm^3 . Provide the answer in MPa (N/mm^2) rounded to two decimal places.

Given a simply supported beam with length L[math] L =8.4m, and load W[math] W =7 kN, find the bending stress σ[math] \sigma at the top of the section in the midspan of the beam, remember to show if this stress is compressive or tensile. The elastic modulus for the top is ze[math] z_e =571733.2 mm3[math] mm^3 . Provide the answer in MPa (N/mm^2) rounded to two decimal places.

Given a simply supported beam with length [math: L] =8.4m, and load [math: W] =7 kN, find the bending stress [math: σ] \sigma at the top of the section in the midspan of the beam, remember to show if this stress is compressive or tensile. The elastic modulus for the top is [math: ze] z_e =571733.2 [math: mm3] mm^3 . Provide the answer in MPa (N/mm^2) rounded to two decimal places.

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