Lect 4 Equilibrium FBD

8/2/2019 Lect 4 Equilibrium FBD

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Free Body Diagram

A free body diagram

-- define the particular body and its system (boundaryconditions, support)

--Isolate the body

-- draw all possible external forces acting on it (Action forces known actions, weight, load concentrated/ distributed.

Reaction forces Contact with other bodies/ support.

-- Choose coordinate system

A free body diagram may be drawn for any single member

of a system, any subsystem of the system or the entiresystem irrespective of whether the system is in equilibrium,at rest, in uniform motion or in a dynamic state of motion.


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Draw Free Body Diagrams


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Draw Free Body Diagrams


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Lect 4 Equilibrium FBD