or Download at the Form and Forces Companion Site (Free with Book Purchase) www.

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or Download at the Form and Forces Companion Site (Free with Book Purchase) www.wiley.com/go/formandforces You can either download the program or work online. This problem will explore the simple six panel truss (Truss #2) shown below. Explore the behavior of the truss by moving nodes and loads with your mouse. After you spend some time getting familiar with the behavior of the truss, answer the following questions a. Return the truss to the "starting position". Why are points 1 and 2, 9 and 10 the same points on the Force Polygon? b. Return the truss to the "starting position". Which members have zero force? Why? c. Return the truss to the "starting position". Which top and bottom chord members have the highest force? Why? d. Return the truss to the "starting position". Which web (branch) members have the highest force? Why? e. Double the depth of the truss. Discuss the effect on the Force Polygon f. Make the truss depth one half its original depth. Discuss the effects on the Force Polygon g. Change on of the loads to a sloping load. How does the left reaction change compared to the right reaction? Why? Force Polygon Simple Truss 45.0 45.0 45.0 45.0 45.0 I I I I I Form Diagram Top Chord Bottom Chord Verticals Diagonals Rb Ra 59.1 C 5T 5T 80.0 C G2 5T 0 C 5> 31.8 C C4 80.0 C 5 T 7* 31.8 C D7 80.0 C G6 202.5 T 0 C 5T 2,5 2.5 80.0 C G9 5T 59.1 C 2.5 T Truss #2 Active Statics

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