2. A thin-walled beam has the cross section shown, with a uniform wall thickness t = 6 mm. 74 mm 50 mm 50 mm 40 mm 60 mm (a) Determine the location of the shear center. Clearly show this location on a sketch of the cross section. (b) Determine the maximum transverse shearing stress in the cross section due to a vertical transverse shear force V = 15 kN applied through the shear center.