APSC 182
Week 4 – Concept Summary
Method of Sections & Internal Forces
Key Concept Review (i.e.,
what you need to know after
watching the online lecture
videos)
Key Equations
Definition of Each Term,
Symbol, and Unit
Additional Important
Information (i.e., concepts
you would like to make note
of these could include sign
conventions, special
characteristics, unique cases,
simple examples,
explanations, relevant
knowns and unknowns,
common terms from word
problems, etc.)
Summary of Method of Sections:
1. Solve for the _________________________________.
2. Section off a portion of the truss that passes through
_____________________ members with unknown forces.
3. Apply the three ______________________________________ to the sectioned
FBD and solve for unknown forces.
ΣF = 0, ΣF = 0 and ΣM = 0