Problem $3$: The part shown is loaded at point $C$ with $300$ N in the positive $x-$direction and at point $E$ with $200$ N in the positive $y-$direction. The diameter of the bar ABD is $12$ mm $.$ Assume the transverse shear stresses are negligible.

a$)$ Draw the bending moment diagrams for ABD.

b$)$ What stresses are present at Point $A$

c$)$ What is the maximum shear stress at point A $?$ Where does this maximum shear stress occur on the cross$-$sectional area of the beam? $($i$.$e$.$ top, bottom, left, right side?$)$

Problem $3-53$

Dimensions in mm $.$