Question

MACE10004 Q1. A simply supported pin-jointed truss, as shown in Figure Q1, carries two point loads of 30kN and 20kN acting at A and B. F is a pin joint support and G is a roller support. It has a constant Young's modulus E and cross-sectional area A for all the members. (a) Calculate the support reactions at F and G. [6 marks] (b) Determine the forces in member DF. [9 marks] (c) Determine the forces in member CD. [9 marks] (d) Determine the axial deformation of member EG. [6 marks] 30 kN 20 kN B D F A 1.5 m I C 2m 2 m E 2 m G Figure Q1 2 m

          MACE10004
Q1. A simply supported pin-jointed truss, as shown in Figure Q1, carries two point
loads of 30kN and 20kN acting at A and B. F is a pin joint support and G is a roller
support. It has a constant Young's modulus E and cross-sectional area A for all the
members.
(a) Calculate the support reactions at F and G.
[6 marks]
(b) Determine the forces in member DF.
[9 marks]
(c) Determine the forces in member CD.
[9 marks]
(d) Determine the axial deformation of member EG.
[6 marks]
30 kN
20 kN
B
D
F
A
1.5 m
I
C
2m
2 m
E
2 m
G
Figure Q1
2 m

MACE10004
Q1. A simply supported pin-jointed truss, as shown in Figure Q1, carries two point
loads of 30kN and 20kN acting at A and B. F is a pin joint support and G is a roller
support. It has a constant Young's modulus E and cross-sectional area A for all the
members.
(a) Calculate the support reactions at F and G.
[6 marks]
(b) Determine the forces in member DF.
[9 marks]
(c) Determine the forces in member CD.
[9 marks]
(d) Determine the axial deformation of member EG.
[6 marks]
30 kN
20 kN
B
D
F
A
1.5 m
I
C
2m
2 m
E
2 m
G
Figure Q1
2 m

Added by Leah H.

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