A load P is supported by a structure consisting of rigid bar ABC, two identical solid bronze [E = 13500 ksi] rods, and a solid steel [E = 30100 ksi] rod, as shown. The bronze rods (1) each have a diameter of 0.73 in. and they are symmetrically positioned relative to the center rod (2) and the applied load P. Steel rod (2) has a diameter of 0.54 in. Assume L1=53 in and L2-73 in. If all bars are unstressed before the load P is applied, determine the normal stresses in bronze rods (1) and steel rod (2) after a load of P = 23 kips is applied. (2) L2 (1) L1 B. C. Answers: ksi.. ! ksi,

A load P is supported by a structure consisting of rigid bar ABC, two identical solid aluminum alloy [E = 73 GPa] rods (1), and a solid bronze [E = 105 GPa] rod (2). The aluminum rods (1) each have a diameter of 8 mm and a length of L₁ = 1.5 m. They are symmetrically positioned relative to middle rod (2) and the applied load P. Bronze rod (2) has a diameter of 16 mm and a length of L₂ = 1.0 m. If all bars are unstressed before the load P is applied, determine the normal stresses in the aluminum and bronze rods after a load of P = 66 KN is applied to the rigid bar. L₁ A B Answer: 0₁ = i 38 02 i L2 (2) (1) (1) MPa MPa