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Engineering Mechanics
According to the law of moments, if a number of coplaner forces acting on a particle are in equilibrium, then
their algebraic sum is zero
their lines of action are at equal distances
the algebraic sum of their moments about any point in their plane is zero
the algebraic sum of their moments about any point is equal to the moment of their resultant force about the same point.
Correct Answer:
the algebraic sum of their moments about any point in their plane is zero
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