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- Problem 2 Determine the reaction for the given support in the truss as shown in Figure 2.0. All inclinced forces are perpendicular in member AC USE 3 DECIMALS ONLY. 15 EN 10 kN 5 KN 12m 2.5m 2.5m 2.5m 2.5m 15 kN 8.5 kN 18 kN Figure 2.0 O 29°C Mostly cloudy ^ GRigid arm AB is subject to a downward force F=270 lbf. It is supported by asquare shaft journal bearing at A and a cable BC.A. Draw a clear and large free-body diagram (FBD) to show all reaction components on AB. Ifany are not engaged, cross them out and add the note “N.E.” for “Not Engaged.” You do NOTneed to set up any equations or solve for any of the reactions.B. Find the unit vector for cable BC.Cansider the pipe shown in (Figure 1). The forces F = 250 N. F = 400 N and F = 600 N are paralel to the , y and z axes, respectively Part A Determine the z y and z components of reaction at the fixed support A using scalar notation Express your answers using three significant figures separated by commas VAE t vec Az. Ay. Az= Submit Request Answer Part B Determine the z, y and z components of moment of reaction at the foxed support A using scalar notation. Express your answers using three significant figures separated by commas. VAE vec (MA). (MA)y. (M,); = N.m Figure Submit Request Answer Provide Feedback 1 m 0.75 m 0.75 m
- The member is supported by a square rod which fits loosely through the smooth square hole of the attached collar at A and by a roller at B. The member is subjected to the forces Fi = 300 N, F2 = 450 N, and F3 = 600 N. (Figure 1) Determine the components of the reaction force of the support at A using scalar notation. Express your answers using three significant figures separated by comma. Ar, Ay = -300,-450 N Submit Previous Answers v Correct Part C Determine the components of moment of the reaction at A using scalar notation. Figure 1 of 1 Express your answers using three significant figures separated by commas. vec (MA)=: (MA)y, (MA): =- 900,100, – 1350 N.m B 1 m 2 m Submit Previous Answers Request Answer 2 m X Incorrect; Try Again; 4 attempts remaining < Return to Assignment Provide Feedback 圓An L-shaped bar is supported by a bearing at A and a smooth horizontal surface at B. Take the value of Fto be 720 N. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 1.5m 1.5m 2m Determine the reactions at A and B. (Do not include a minus sign in your response.) The y component of the reaction force at A is [ NT. The z component of the reaction force at A is N✓. The reaction moment at A about the y axis is N-m . The reaction moment at A about the z axis is N.m O The y component of the reaction force at Bis NT.Situation 22 - For the frame shown in AN- 5 m 15, the force F acting upward at C causes a RA horizontal reaction of 100 N at B. 29. Determine the value of the force F in kN. Answer: 120 kN 30. Determine the reaction at A in kN. Answer: 156.2 kN 31. Determine the angle in degrees that the reaction at A makes with the horizontal Figure SP-3.25 axis (positive counter clockwise). Answer: 230.19°
- Answer FOUR questions ONLY selecting TWO questions from SECTION A. 1. (a) The vertical structure ABCD shown in Figure 1(a) is subjected to a system of coplanar forces and a moment. The structure is simply supported at D with a frictionless pin and is roller-supported at A. i Sketch the free body diagram (FBD). Take moments about D and hence find the reaction force at support A. ii. 35 AN 23m 60 100 km Osm Figure 1(a) (b) An assembly of a steel bar enclosed within an aluminium alloy tube is shown in Figure 1(b). The tube and the bar are of the same initial length. The combination is compressed between two rigid parallel plates by a force of 500 kN. The diameter of the steel bar is 40 mm, and the inside and outside diameters of the alloy tube are 60 mm and 100 mm respectively. The Young's moduli for steel and aluminium alloy respectively are Est = 200 GNM2, EA = 70 GNm?. Find the stresses generated in the steel bar and the aluminium alloy tube. Sael he -Rid pl Figure 1(b)Situation 8- The beam is supported at A and supported by a cable at B as shown in Figure AP-4.20. 20. Determine the reaction at A, in N. Answer: 513.20 N 21. Determine the tension force in the cable, in N. Answer: 355.56 N 2 m ACable 800 N/m B 30 Flgure AP-4.20The truss is subjected to a mass of 400 kg as shown in the following figure. The truss is supported by a pin at A and a roller at D. The reaction at roller D is equal to. 3 m 2 m A 1.5 m 0.5 m 0.5 m E 1.5 m C 1.5 m 400 kg Select one: O a. 3925 N O b. 3815 N O c. 4316 N d. 4618 N
- Question 4. Consider the diagram below, which is not to scale. R A A Ym Reaction at A: RA= = Reaction at B: RB X KN = 6m Given that X = 45 kN and Y = 5 m calculate the reactions at support A and B. Enter your answers in kN correct to three significant figures in the appropriate boxes below. KN B KN R BSolve the following problems completely. Include the FBD with proper labels. 1. The truss is supported by a hinge at A and a roller at D as shown. Find the reactions in the supports. 20 kips C 3 ft D 10 kips - 3 ft 3 ft 2. The truss is supported by a roller at A and a hinge at D as shown. Find the reactions in the supports. B 10 KN 1.5 m 250 A 2 m 2 m 20 KNQuestion 1. RAX A 0 RAY F₁ Enter FAP: KN F KN E F₂ D The figure above is a pin-joint frame with angle 8 = 50° between members AF and AB. (Note that the diagram is not to scale). Given that the reaction forces at the support A are given by RAx = 70kN and RAY = 30kN, calculate the forces in members AB and AF, denoted by FAB and FAF respectively. Enter your answers in kilonewtons (kN) correct to 2 decimal places in the boxes below: Enter FAB RDY 4 [6 m