Question

what is the name of the graphic method that consists of solving a series of concurrent force systems in order to find the internal forces in the members of a planar truss?

• method of joints
• statical analyls
• truss method
• algebraic method

Explanation:

The Method of Joints is a graphic (and also algebraic) method used to find internal forces in planar truss members. It involves solving concurrent force systems at each joint (since forces at a truss joint are concurrent). "Statical Analysis" is a broad term, "Truss Method" is not a specific recognized method for this, and "Algebraic Method" is more general or refers to another approach (like Method of Sections can be algebraic, but the described graphic method for concurrent force systems at joints is Method of Joints).

Answer:

A. Method of Joints