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Rigid body equilibrium is the condition in which bodies, assumed to be undeformable and thus incapable of changing shape, remain stationary under the action of forces and moments. In mechanics, a rigid body is an object composed of particles, but with no relative motion between these particles, so that the entire body moves as a single unit. Equilibrium is defined by the absence of any translational (linear) or rotational (angular) motion. For this state to occur, the vector sum of all external