please answer number 3 with explanation. i am still learning A/C STRUCTURES 11) Use the method of joints, determine the force in members BD, BE, CE,DE, and EP of the loaded Howe roof truss as shown in Fig. 12) Using the method of sections, determine the force in members CH, DH,GH, DG, and EG of the loaded cantilever truss as shown in Fig. 2200jb3) Use the method of sections to determine the force in members BD, BE,DE, EP, and EG of the loaded Bowstring truss as shown in Fig. 3A40TURDAY4) The structure as shown in Fig. 4 is hinged at A and C. Find theresultant hinge forces at B, C, and A.A|3m400100 KN30°10'4m B 4m400bTO30C10¹ E1500lbAEROAMT41141 6PRELIM EXAMINATION329FIG. IFIG. 2TE400 lb30°3010 G 10c. K.m 10 4m200 lb6mCCHmamam8'B8'Date:12 C600 lbwwerdenm128'12'E 121000 lbFIG. 38'G 12Amfergren800 lb1400 lb8'6'FIG. 4HOरपयोय200 lb

Use the method of sections to determine the force in members BD, BE, DE, EF, and EG of the loaded…

Answered: PUB mat 12' 8¹ 12 C12 E 600 lb E 12…

Engineering

Mechanical Engineering

PUB mat 12' 8¹ 12 C12 E 600 lb E 12 1000 lb FIG. 3 8' G 129 800 lb रायपोय

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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1) As a part of semester project, a group of students in ENGR 2001 class is tasked with designing the loaded Truss Bridge shown in Figure 1. Students are required to perform member force analysis calculations using the Method of Joints. a) Draw the Free Body Diagram (FBD) of the complete truss and use this diagram to determine the reaction forces at the supports A and D. Note the truss is supported by a roller at D Using the Method of Joints. determine the forces in members: b) AB c) BF d) BE (T 3 State whether the members are in tension or compression. 2m 2 m 1.5 m E A B 11 kN 22 kN -2 m Figure 1 D
EXTRA CREDIT PROBLEM 6.6 Using the method of joints, determine the force in each member of the truss shown. State whether each member is in tension (T) or compression (C) (+) = Tension / (-) = Compression 4.5 m 4.5 m D 2.8 m C 8.4 kN 8.4 kN A Question 28 ( FBC in kN Your Answer: Answer A Question 29/ 4 FBD in KN Your Answer: Answer Retake question Retake question
Topic: Trusses For full credit you must use the method requested and show each FBD used to solve the problem. Problem 1: A Warren bridge truss is loaded as shown. a) Determine the force in members CE, DE, and DF using the method of sections and indicate if each member is in tension, T, or compression, C. Include a clearly labeled free-body diagram of your section. 6.25 ft 12.5 ft , 12.5 ft , 12.5 ft , 12.5 ft Ans. B D F H FCE = 8,000 lb, T 15 ft FDE = 2,600 lb, T FDF = 9,000 lb, C C E G I 12.5 ft12.5 ft 12.5 ft ' 12.5 ft ' 12.5 ft 6000 lb 6000 lb b) Using method of joints and the forces from part a) find the forces in members BD and DC and indicate if each member is in tension or compression.
Determine the forces in members EF and GI of the truss shown. 28 kips 28 kips C E K 16 kips 10 ft D F H 8 ft 8 ft 8 ft8 ft 8 ft STRATEGY: You are asked to determine the forces in only two of the members in this truss, so the method of sections is more appropriate than the method of joints. You can use a free-body diagram of the entire truss to help determine the reactions, and then pass sections through the truss to isolate parts of it for calculating the desired forces.
*) Determine the force in members ac,be,ce,ei & gh of truss shown in figure f h b 3m + 3m 4m g + 4m C d + 4m 6000 KN 4m a
Question 3 Using the method of joints, calculate the force in each member of the truss shown. State whether each member is in tension or compression. 200 kN 30° B 60° 30° A D. 6m O Forces: AD 200 KN (T). AD-173.2 kN (C), BD-173.2KN (T) DC-100 kN () CD 173.2 KN (C) O Forces: AB-100 kN (C). AD- 175.2 KN (T). BD-175.2 KN (C) DC-200 KN (C), CD-175.2 KN (T) O Forces: AB-200 kN (C), AD= 173.2 KN (C). BD-173.2 kN (C), BC=100KN (C). CD-1732 KN (T) O -200 kN (C), AD 173.2KN (T), BD 123.2 KN (C). OC-100 KN (C), CD1732 KN () Forces: AD O Forces: AB 100 kN (T), AD 175.2 kN (C). DD-175.2 N (T). BC 200 KN (T). CD 175.2 KN (C) Question 4 6m
a) What is a truss? Explain shortly in your own words, and illustrate with one example. b) For the truss in the figure below, determine the zero-force members and give a short explanation to support your answer. B C D A H -1.5 m- G F -1.5 m 1.5 m-1.5 m-- 2 m 2 m E
Which of the following most nearly gives the force in member DE for the truss loaded as shown? B a) DE = 15,942.86 lb (T) 6200 lb b) DE = 14,704.60 lb (C) 4 ft D DE = 17,672.72 lb (T) 13 ft d) DE = 2,524.67 lb (C) A e) DE = 9,300 lb (C) 9 ft- 9 ft f) None of the choices
Use the method of sections to determine the forces in members BD, CD, and CE. Note: The support reactions given below were determined in lecture last week (“Example: Method of Joints"). [Ans.: Fsp = -4 kN (comp), FCD = 2.83 kN (tension), FCE = 1 kN (tension)] Cut b Some potential (3 unk.) y section lines 1 kN Cut c (cuts a, b̟ and c): (3 unk.) Cut a (4 unk.), 2 m 2/n 2 m 2 th 2 m → F=-1 kN F = 2 kN 5 kN A, = 3 kN %3D %3D Note: The length of each member is 2 m and hence 0 = tan-1(2 m/2 m) = 45° E.
Question 2: For part a), analyze the rectangular truss in Sl units. For part b), analyze the triangular truss in FPS units. 10 kN 8 kN 4 kN a) Use the method of joints to find the forces in members AB, AC, and AF. State whether each member is in tension (T) or compression (C). 3 kN- 1.5 m 2 m 2 m -9 ft-6 ft--6 ft--9 ft- tontont b) Using the method of sections, find the forces in members DC, HI, and JI using the cuts s-s and t-t. State whether each is in tension (T) or compression (C). 6 ft 1200 lb 1600 lb 6 ft 12 ft A B |- 6 ft-+-6 ft --|
B D F 3. A Howe truss is loaded as shown below, P = 32 kN. a) Find the support reactions at A and Н. 4 m b) Find the force in member BC using method of joints. c) Find the force in member DF using A H C E G method of sections. Note: You must draw the free body diagrams needed to solve the problem. Ans: Ax = 0, Ay = 24 kN ↑, H, = 8 kN ↑ FBC = 24 kN (T), FDF = 6 kN (C) P 3 m 3 m 3 m 3 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