Consider the truss shown in (Figure 1). Suppose that F = 4 kN and F = 5.5 kN . After the truss is sectioned use a single equation of equilibrium for the calculation of each of the required forces. FBC = -10.6 kN Submit Previous Answers v Correct gure 1 of 1 Part B Determine the force in member HC. State if this member is in tension or compress Express your answer to three significant figures and include the appropriate negative value in the case of compression and positive value in the case of t 3 kN 2 kN D HA 3 m FHC = 1.70 kN F 2m -5m- -5 m- -5 m- -5 m- Submit Previous Answers Request Answer

The two bars are used to support load P. When unloaded, joint B has coordinates (0, 0). After load P is applied, joint B moves to the coordinate position (-0.46 in., -0.20 in.). Assume a = 15 ft, b = 30 ft, c = 10 ft, and d = 20 ft. Determine the normal strain in each bar. A Answer: EAB EBC = i i P a (1) B με με X b (2) C d

The members of the truss shown have equal cross-sectional areas A = 400 mm2. The suspended mass is m = 3400 kg. What is the normal stress in the member DE? Answer in MPa and use two decimals places.