Frames are structures that include non-[[Two Force Members|two force members]]. As such, a new solution approach is required for frames. Frames are quite common in machine structures and typically have more complex member geometries compared to [[Truss|trusses]].
General approach to frames:
1. Determine [[Supports|support]] [[Force|forces]].
2. Create [[Free-Body Diagram|free-body diagrams]] for each member and joint of the frame.
3. Apply Newton’s third law between connected members and joints.
4. Identify and note which members are two force.
5. Calculate the unknown forces on each member using the [[Two-Dimensional Equilibrium Equations|equilibrium equations]].