(Answered) Question a metal plate with its lines of symmetry shown as

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Question: A metal plate, with its lines of symmetry shown as dash-dot lines in the two-dimensional view, is welded to a vertical metal wall (with the surface of the wall being parallel to the plane of the paper). A vertical load, F = 3000 lbf, is applied to the far end of the plate.

(a) Find the total second polar moment of area (total polar area moment of inertia) of all weldments.

J.(Hint: Use a table to simplify the calculation.)

(b) Find the maximum value of the secondary shear stress, (Τ'')_max, due to torsion only.

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