Equilibrium

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Any static force system will be in equilibrium if the resultant force and resultant moment are both equal to zero.

Static equilibrium can be expressed as

ΣF_x = ΣF_y = ΣF_z = 0         (1)

ΣM_x = ΣM_y = ΣM_z = 0         (2)

where

F = force (N, lb)

M = moment (Nm, ft lb)

x, y, z = orthogonal axes

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Related Topics

• Mechanics - Kinematics, forces, vectors, motion, momentum, energy and the dynamics of objects

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