Point particle representation of the forces acting on a moving object
Three forces on an object in equilibrium form a closed vector triangle
Free-body diagram of an object suspended from a stationary rope
When labeling force vectors, it is important to use conventional and appropriate naming or symbols such as:
Using unexpected notation can lead to losing marks so try to be consistent with expected conventions.
Free body diagrams can be used to show the various forces acting on objects
Draw free-body diagrams for the following scenarios:
a) A picture frame hanging from a nail
b) A box sliding down a slope
A picture frame hanging from a nail:
A box sliding down a slope:
Draw a free-body diagram of a toy sailboat with weight 30 N floating in water that is being pulled to the right by an applied force of 35 N with a total resistive force of 5 N.
Step 1: Draw the object in a simplified diagram
Step 2: Identify all of the forces acting upon the object in the question, including any forces that may be implied
Step 3: Draw in all of the force vectors (arrows), making sure the arrows start at the object and are directed away