Question # 4(25 Marks) Figure Q4 shows a thin-walled cantilever beam that supports shear loads at its free end. Maximum

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Question 4 25 Marks Figure Q4 Shows A Thin Walled Cantilever Beam That Supports Shear Loads At Its Free End Maximum 1 (50.22 KiB) Viewed 36 times

Question # 4(25 Marks) Figure Q4 shows a thin-walled cantilever beam that supports shear loads at its free end. Maximum bending moments caused by applied shear loads are Mx= - 5000 N.mm & My=8000 N.mm. Assume that the position of shear loads is such that no twisting of the beam occurs. Calculate: (a) The centroid of the cross section (5 Marks) (b) The second moments and product second moments of area (10 Marks) (c) The maximum direct stresses at point 1, 2 and 3. (10 Marks) Direct stresses due to bending moments in a beam are given by: Mylxx-Mxxy Mxlyy-Mylxy x + Ixxlyy-lay Ixxlyy-ly 0 = 24 mm X 1.25 mm с 1.25 mm X 2 3 36 mm Figure Question 4