Link AC is made of a steel with a 65-ksi ultimate normal stress and has a 1 X 1/11 -in. uniform rectangular cross section. It is connected to a support at A and to member BCD at C by-in.-diameter pins, while member BCD is connected to its support at B by a -in.-diameter pin. All of the pins are made of a steel with a 25-ksi ultimate shearing stress and are in single shear. Knowing that a factor of safety of 2.75 is desired, determine the largest load P that can be applied at D. Note that link AC is not reinforced around the pin holes. A 8 in. B -in. C 6 in. - 4 in. D P The largest load P that can be applied at Dis lb.