# HMWK_2-1 - a Draw a free body diagram for each pin(A-G...

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EAS102 G/H Spring 2009 Homework 2 Due Tuesday 2/17/08 The object of this problem is for you to perform a simple truss analysis so that you are familiar with what is needed for the design project. The structure below is a 2-D truss, each bar has a length of 10 inches, and vertical loads are applied at point C and E. The foundation at point A is pinned and resists both horizontal and vertical movement, and the foundation at G is a roller and resists only vertical motion. For the 2-dimensional truss shown above:

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Unformatted text preview: a. Draw a free body diagram for each pin (A-G) introducing appropriate variables for the unknown forces in the bars and reaction forces as A and C. b. Write the equations of equilibrium at each point (A-G) (14 equations). c. Can you use symmetry to reduce the number of equations and unknowns to seven. A B C D E F G L=10 in Typical 100 lb 100 lb d. Solve for the forces in the bar and indicate which forces are tensile and which forces are compressive....
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