Lesson Plan: Free-Body Diagrams Physics

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to analyze free-body diagrams and use them to determine the net force and unknown forces acting on objects.


Students will be able to

  • use a free-body diagram to determine the resultant force on an object,
  • use a free-body diagram to determine the magnitude of a given force acting on an object.


Students should already be familiar with

  • the addition of vectors,
  • the fact that the reaction force at a point on a surface is equal to the force perpendicular to the surface that is directed toward the surface.


Students will not cover

  • calculations of accelerations from forces.

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