Drawing FBDs for Ramps

  • Choose the object of interest and draw it as a dot or box

  • Draw and label all the external forces acting on the object

  • Sketch a coordinate system, choosing the direction of the object's motion as one of the positive axes



  • When forces don't line up with axes, you can draw a pseudo-FBD

  • Break forces that don't line up with axes into components that do

  • Redraw your diagram with all forces parallel to axes


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