EQUILIBRIUM OF FORCES

Equilibrium is described in two ways:

1. A particle is at rest,
2. A particle is moving in uniform motion, that is, there is no acceleration.

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Adopting Newton's second law, F=ma, if we use zero for acceleration (at rest or uniform motion), we get the equation:

                                             F=0

The basic formula can be computed even more easily when the forces are converted to just two perpendicular axes x and y. Thus, the components of forces are used to easily add or subtract collinear forces.

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