4. Use the Method of Sections for this problem. Determine the force in members EF, BE, and BCof the truss and state if these members are in tension or compression. (Note: you will need tosolve for the roller forces at D by drawing a FBD of the entire truss system and summing themoment about A).(6-41)[BC=18kN (T); EF=15kN (C); BE=5kN (C)]2 m1.5 m-2 mEF2 mBC11 kN22 kN

Answered: Image /qna-images/answer/6e6caf0c-605c-473c-b99e-55833af5519a.jpg

Answered: 4. Use the Method of Sections for this…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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2. Use the Method of Sections for this problem. From drawing a FBD of the entire system and summing the moments about point A, you find that the reaction force at roller F=57.5kN 1. Determine the force in members CD, CH, and HI and state if each member is in tension or compression. (6-22)[CD=125kN (C); CH=100kN(T); HI=42.5kN (T)] -2 m 40 kN -2 m 50 kN -2 m F E ID H I C 1.5 m -30 kN 1.5 m B 40 kN 1.5 m
2) A force, P, is applied to the truss shown to the right. First, determine the support reactions at C and F. Determine the force in member AB in terms of the A В applied force P (specify tension or compression). You must do this problem: (a) first, using method of joints, (b) second, using method of sections. (For part (a), plan ahead: what is the best joint to start with, so you can minimize the number of joints you need to analyze?) (FYI, you can do this problem without a calculator problem.) Ans. C, = 2P/3 (↑), Fx = 0, F, = P/3 (↑) FAB = P/2 (C) 4 m C F E OMONO P 3 m 3 m 3 m
3. For the truss shown below, the force P is 320 N. Find the support reactions at A and C. Using method of joints, find the forces in all the members. Specify (C) or (T). Ans: Ar = 0, Ay = 240 N T, Cy = 80 N 1, FAD = 300 N (C), FAB = 180 N (T), FBD = 100 N (C), FDE =D120 N (C), FBE = 100 N (T), FBC = 60 N (T), FCE = 100 N (C) %3D %3! %3D %3D %3D 3 m 6 m 3 m E D 4 m A
3 m -3 m *-3 m 3 m B C 4 m H 10 kN 15 kN 5 kN A) Use method of sections to find the forces in CD, DG, and FG. The reaction at E is 13.75 kN. Show your section free body diagram. Use the appropriate descriptions of truss member forces.
6-7 G 4 ft- B 600 lb 4 ft 4 ft- 4 ft- 600 lb 800 lb Determine the forces in members BC, CF and EF using method of sections. State if the members are in tension or compression.
Calculate the force in member GH of the truss and indicate whether it is in tension or compression, using either method of joints or method of sections. Required: Draw the FBD(s) as needed for analysis-all equilibrium equations must correspond to a FBD that you have drawn. Make sure to clearly indicate which FBD your equation(s) correspond to. K J H 4 ft C - 3 ft 3 ft -- 3 ft- 3 ft-3 ft 1500 lb 1500 lb 1500 lb 1500 lb 1500 lb
in the fink truss shown in fig. p-4-4.5, the web members BC and EF are perpendicular to the inclined members of their midpoints. if p=2000lb, use the method of sections to determine the force in DF, DE, and CE
3 The figure shows a plana that is held in static equilibrium by two supports at joints A and G. The truss members have negligible masses. Members AB, BC, CD, and GF are oriented horizontally, and the members AG, BF, and CE are oriented vertically. The 20 kN load is oriented vertically and the 30 kN load is oriented horizontally. Calculate the forces in the following truss members and state if they are in tension or compression: a. Member AB b. Member BF mamo c. Member FE org d. Member CE e. Member DE m A 4 m BY K 4 m 4 m 30 kN C E 3 m 4 m 20 kN D Anywers OF DOORN MOnston) DE ODONG fogmpression) es compression) Po Loka
For the next Trusses, compute the axial forces in the selected sections. Compare the result with the method of joints. (Check the image for the trusses)
2) A cantilevered truss is loaded as shown below. Using method of sections determine the force in member BC. Leave your answer in terms of P. Specify tension (T) or compression (C). (FYI, you do not need a calculator to do this problem.) (Hint: you do not need to find the support reactions to do this problem.) Ans: FBC = (9P)/4 (T) 6 m 6 m 4 m D E 3 m 6 m 3 m
Problem # 1 A 1ok For the pinned frame in the figure, calculate the pin forces acting at point B, on member BD (magnitude and direction). B dol 4'
Solve the following problems by the method of sections. State whether the members are in tension or compression. is 5 The length of each truss member in Fig. ft. Find the forces in members CD, DE, and EF. D A B F 1000 lb 800 lb 600 lb 800 lb

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