(Solved): - Part A-Determining the forces in three specified members of the truss Learning Goal: To apply th ...

- Part A-Determining the forces in three specified members of the truss Learning Goal: To apply the method of sections to a truss and determine the unknown forces in specilied members. Defermine the forces in members $$CD,DH$$, and $$GH$$. If a truss is in equilibrium then every member in the truss must also be in equilbrium. This princliple is used in analyzing a truss using the method of sections. To apply the method of sections, we use an imaginary cut through Express the magnitudes of the forces in pounds to three significant flgures. Separate your answers with cummas. members of the truss to expose the forces in those members as external forces. (Eigure 1) If the free-body diagram of the joint on either side of the cul is known, we can apply the equalions of equilbrium to that part of the member to determine the forces at the cut section. Since only three equilibrium equations $$(?F_x=0,?F_y=0$$, and $$?M_O=0$$ ) can be applied to the free-body diagram of any segment, we should try to select a cut that passes through no more than three members of the truss in which the forces are unknown. Note that the moment equation can be written multiple times, but there are still only 3 independent equilbrium equations avalable. For the Howe bridge truss shown, $$d=11\mathrm{ft},F_1=3050\mathrm{lb},F_2=1850\mathrm{lb},F_3=2450\mathrm{lb}$$, and $$F_4=4050\mathrm{lb}$$. $$x$$ Incorrect; Try Again; 5 attempts remaining Part B - The Sense of the Forces - Part C-Determining the forces in three members on the left-hand side of the truss Determine the forces in members $$HI,BH$$, and $$BC$$. Express the magnitudes of the forces in pounds to three significant figures. Separate your answers with commas. - Part D-The Sense of the Forces State if the members considered in part $$\mathrm{C}$$ are in tension or compression. Complete each sentence by dragging the appropriate word into the blank. The words can be used more than once.