(Solved): Each bar of the truss shown in the figure below has a diameter of 20 \( \mathrm{mm} \). Suppose tha ...

Each bar of the truss shown in the figure below has a diameter of 20 \( \mathrm{mm} \). Suppose that \( P=20 \mathrm{kN} \). (Figure 1) Figure Part B Determine the average I Express your answer te Determine the average normal stress in bar \( B C \) of the truss Express your answer to three significant figures and include the appropriate units. Part B Determine the average nornal stress in the bar \( A C \) of the tiuss Express your answer to three significant figures and include the appropriate units. Determine the average nomal stress in the bar \( A B \) of the truss Express your answer to three significant figures and include the appropriate units.