w А, T ch h B w R M b JA(1/r)dA=b+ln(rdr) r The figure (not drawn to scale) shows a curved I-beam of given section and i

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w А, T ch h B w R M b JA(1/r)dA=b+ln(rdr) r The figure (not drawn to scale) shows a curved I-beam of given section and inner radius subjected to a bending moment Given Sections parameters, 13 mm, A- 125 mm, 10 mm and - 13 mm, Inner radius 2.- 400 mm and bending moment M-70 MPa. Calculate the radius of curvature at the beam's section centroid 7. the radius of curvature at the neutral axis R and the stress at point Enter your answers in the boxes below. The answers are acceptable within a tolerance of 0.01 mm for the radii and of 0.1 MPa for the stress. mm (3 mark) R: mm (3 mark) MPa (2 mark)