Question

PartA Consider the truss shown in (Figure 1). Suppose that F 13 kN Determine the force in member CD and state if this member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. FcValue Units CD = Submit Request Answer Figure 1 of 1 Part B Determine the force in member CJ and state if this member is in tension or compression. 9 kN 6KN Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. 4 KN 6 kN FCJ I Value Units 15 m 1.5 m 1.5 m 1.5 m Submit Request Answer Part C Consider the truss shown in (Figure 1). Suppose that F 13 kN Determine the force in member GJ and state if this member is in tension or compression. Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. Value Units Submit Request Answer Figure 1 of 1 Part D Determine the force in member CG and state if this member is in tension or compression. 9 kN 6 kN Express your answer to three significant figures and include the appropriate units. Enter negative value in the case of compression and positive value in the case of tension. 4 kN 6 kN 2 m Imm cValue Units 1.5 m 1.5 m 1.5 m 1.5 m Submit Request Answer

Answer 1

Solution y 20,75 kN 3) 33.69 At joint E t12Fy n(3369) 20.75-6-0 20.16-26.6IRNC) Sin( 33.b) Fy Foc Fot at a

orSin(3)- Sin(33 69) foy Sin(33 r) sinl u) -0 Solving u) and G) Po C) Pant (B)

Answer 2

Sorry I do not have the actual work, but these are the correct answers I found in mastering engineering through trial and error:

Part A: FD =  22.5 kN

Part B: CJ = -8.11 kN

Part C: GJ = -18.9 kN

Part D: CG = 7.50 kN