Lecture 2 - Equilibrium of Particles

Lecture 2 - Equilibrium of Particles - EQUILIBRIUM OF...

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EQUILIBRIUM OF PARTICLES, FREE BODY DIAGRAMS ES 11 – Statics of Rigid Bodies Lecture 2

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EQUILIBRIUM OF A PARTICLE A particle is said to be in equilibrium when the resultant of all the forces acting on it is zero.
EQUILIBRIUM OF A PARTICLE If two forces are the only forces acting on a body in equilibrium, then the forces are equal and opposite.

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EQUILIBRIUM OF A PARTICLE In general, if there are several forces, when drawing the force polygon, it will close if the particle is in equilibrium.
EQUILIBRIUM OF A PARTICLE Mathematically, for equilibrium: In terms of scalar components

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SPACE DIAGRAMS AND FREE BODY DIAGRAMS SPACE DIAGRAM – a sketch showing the physical conditions of a problem FREE BODY DIAGRAM – a diagram of a chosen significant particle with all the forces acting on it. Source:
SPACE DIAGRAMS AND FREE BODY DIAGRAMS STEPS IN CONSTRUCTING FREE BODY DIAGRAMS:

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