Learning Goal: Part A - Where to Start the Analysis For this truss, what joint is the best place to start the analysis? Select the correct answer

Learning Goal: Part A - Where to Start the Analysis For this truss, what joint is the best place to start the analysis? Select the correct answer. To learn to apply the method of joints to a truss in a systematic way and thereby find the loading in each member of the truss. In analyzing or designing trusses, it is necessary to determine the force in each member of the truss. One way to do this is the method of joints. The method of joints is based on the fact that if the entire truss is in equilibrium, each joint in the truss must also be in equilibrium (i.e. the free-body diagram of each joint must be balanced) Consider the truss shown in the diagram. The applied forces are P = 550 lb and B = 450 lb and the distance is d=8.50 ft. Joint A Joint B Joint Joint D (Figure 1) Joint E Submit Previous Answers Correct Because joint is the only one that has both a known force and at most two unknown forces, we have to begin the analysis there. Part B - The Forces in the Members at Joint C What are the forces in the two members CB and CD? Express the magnitudes of the forces to three significant figures. Separate your answers with a comma. VE ΑΣΦΠ vec ? FCB = Fop lb. lb Submit Request Answer Figure 1 of 1 Part C - The Sense of the Forces State if the members considered in part 3 are in tension or compression. Complete each sentence by dragging the appropriate word into the blank. The words can be used more than once. Reset Help B tension Member CB compression 30° 30° ? is in E D d d tension
Part - The Forces in the Members at Joint D Having found Fcp in the analysis of joint C, there are now only two unknown forces acting on joint D. Determine the two unknown forces on joint D. Express the magnitudes of the forces to three significant figures. Separate your answers with a comma. VO | ΑΣΦ vec ? Fop For lb, lb Submit Request Answer
Part F - The Forces in the Members at Joint B Having found Fcp in the analysis of joint C and Fpe in the analysis of joint D, there are now only two unknown forces acting on joint B. Determine the two unknown forces on joint B. Express the magnitudes of the forces to three significant figures. Separate your answers with a comma. Vi] ΑΣΦ vec ? FRA FR Ib, Ib Submit Request Answer