Engineering Mechanics – Trusses

Please see attached file.

  

Q1 , Q2 and Q4- 6 IGNORE

Q3: Identify the zero-force members in this truss.

For Questions 7 – 9

Q7: Forces F1=4.2kN, F2=0.82kN. (a) What is the magnitude of force in member BD? (tension+, comp-)

Q8: (cont) F1=4.2kN, F2=0.82kN. (b) Find the magnitude of the reaction force at the roller joint RA.

Q9: (cont) F1=4.2kN, F2=0.82kN. (c) What is the magnitude of the “tension” in member AB? (tension+, comp-)

For questions 10-18

Q10: Forces F1=35kN, F2=17kN, and F3=10kN. (a) What is the sum of all the forces applied by truss members at Joint E? (Fae+Fbe+Fce+Fde)

Q11: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (b) Find the magnitude of the reaction force at the roller joint RA.

Q12: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (c) What is the magnitude of the tension in member AB? (tension+, comp-)

Q13: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (d) What is the magnitude of the tension in member AE? (tension+, comp-)

Q14: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (e) What is the magnitude of the tension in member CD? (tension+, comp-)

Q15: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (f) What is the magnitude of the tension in member ED? (tension+, comp-)

Q16: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (g) What is the magnitude of the tension in member BC? (tension+, comp-)

Q17: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (h) What is the magnitude of the tension in member EC? (tension+, comp-)

Q18: (cont) Forces F1=35kN, F2=17kN, and F3=10kN. (i) What is the magnitude of the tension in member BE? (tension+, comp-)

For Questions 19 – 26

Q19: Forces F1=12kN, F2=22kN, and F3=25kN. (a) Find the magnitude of the reaction force at the roller joint RA.

Q20: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (b) Find the vertical component of the reaction force at pin joint Ro.

Q21: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (c) Find the horizontal component of the reaction force at pin joint Ro.

Q22: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (d) Find the “tension” in member G I. (tension+, comp-

Q23: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (e) Find the “tension” in member FH. (tension+, comp-)

Q24: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (f) Find the “tension” in member HJ. (tension+, comp-)

Q25: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (g) Find the “tension” in member GH. (tension+, comp-)

Q26: (cont) Forces F1=12kN, F2=22kN, and F3=25kN. (g) Find the “tension” in member HI. (tension+, comp-)