Question 6.2: Determining the Largest Force a Truss Will Support Each memb...

Engineering Mechanics: Statics

Determining the Largest Force a Truss Will Support

Each member of the truss in Fig. 6.13 will safely support a tensile force of 10 kN and a compressive force of 2 kN. What is the largest downward load F that the truss will safely support?

Strategy
This truss is identical to the one we analyzed in Example 6.1. By applying the method of joints in the same way, the axial forces in the members can be determined in terms of the load F. The smallest value of F that will cause a tensile force of 10 kN or a compressive force of 2 kN in any of the members is the largest value of F that the truss will support.

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