Question

select all that apply
which statements are correct and must be considered when drawing free - body diagrams?
superimpose the free - body diagram on your sketch of the problem situation.
represent each force with an arrow, starting at the object and pointing away from it in the direction that the force is applied.
choose a direction to be positive, and indicate this on the diagram.
make the length of each arrow proportional to the magnitude of the force, using your best estimate if necessary.
represent the object of interest with a dot.
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Explanation:

• When drawing free - body diagrams, the object of interest is often represented as a dot. Forces are represented by arrows starting at the object (the dot) and pointing in the direction of the force. The length of the arrow should be proportional to the force magnitude (estimated if needed). Also, choosing a positive direction and indicating it on the diagram is important.
• Superimposing the free - body diagram on the problem - situation sketch is not a standard practice. The free - body diagram is a separate diagram focusing only on the forces acting on the object of interest.

Answer:

B. Represent each force with an arrow, starting at the object and pointing away from it in the direction that the force is applied.
C. Choose a direction to be positive, and indicate this on the diagram.
D. Make the length of each arrow proportional to the magnitude of the force, using your best estimate if necessary.
E. Represent the object of interest with a dot.