A circular brass bar with a diameter d is member AC in truss ABC that has load P = 30 kN applied at joint C. Bar AC is composed of two segments brazed together on a plane pq, making an angle   = 36 0...

A circular brass bar with a diameter d is member AC in truss ABC that has load P = 30 kN applied at joint C. Bar AC is composed of two segments brazed together on a plane pq, making an

angle = 36⁰
with the axis of the bar (see figure). The allowable stresses in the brass are 90 MPa in tension and 48 MPa in shear. On the brazed joint, the allowable stresses are 40 MPa in tension and 20 MPa in shear. What is the tensile force N_AC
in bar A_C? What is the minimum required diameter d
_min
of bar AC?