The frame supports the triangular distributed load shown. Determine the normal and shear stresses at point E that act perpendicular and parallel, respectively, to the grains. The grains at this point make an angle of 45° with the horizontal as shown.

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900 N/m 200 mm 35 75 mmi 2.4 m- 100 mm 0.6 m 3 m 50 mm 30 mm 1.5 m 100 mm A