What bending moment will cause a maximum stress of 72.0 MN/m (MPa) in the beam with...

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What bending moment will cause a maximum stress of 72.0 MN/m (MPa) in the beam with the cross sec- tion shown? 10 mm -10 mm 60 mm 10 mm -60 mm PROB. 14.6 What bending moment will cause a maximum stress of 72.0 MN/m (MPa) in the beam with the cross sec- tion shown? 10 mm -10 mm 60 mm 10 mm -60 mm PROB. 14.6