2. (42 pt) A truss structure is used to support three forces as shown in the figure. (Point A is pin supported and point

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2 42 Pt A Truss Structure Is Used To Support Three Forces As Shown In The Figure Point A Is Pin Supported And Point 1 (29.53 KiB) Viewed 12 times

2. (42 pt) A truss structure is used to support three forces as shown in the figure. (Point A is pin supported and point I is roller supported) a) Is there any zero-force member (by observation)? Which? b) Find the support force at point I. c) Use method of section to determine the forces in members EG, DG and DF and indicate if it is in tension or compression. Draw the free-body diagram of the partial truss you take for analysis. d) Use method of joints to determine the forces (magnitude and tension/compression) in the members of GH and FH if HI is known for tension 12.75 kN. Draw free-body diagrams for the joint you take for analysis. 2 kN 0,4 m 4 KN 6 KN 0.4m 0,4m --0.4m "1 0.3 m 0.3 m