Applied Mechanics and Graphic Statics
Free body diagram is an

None of these
Isolated joint with all the forces, internal as well as external, acting on it
Isolated joint with only body forces acting on it
Isolated joint with internal forces acting on it

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Applied Mechanics and Graphic Statics
Newton’s Law of Motion is:

Everybody continues in its state of rest or of uniform motion in a straight line, unless it is acted upon by some external force
The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts
To every action, there is always an equal and opposite reaction
All listed here

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