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According to the principle of moments

AIf a system of coplanar forces is in equilibrium, then their algebraic sum is zero

BThe algebraic sum of the moments of any two forces about any point is equal to the moment of the resultant about the

CPositive and negative couples can be balanced

DIf a system or coplanar torces is in equilibrium. then the algebraic sum of their moments about any point in their plane is zero

Answer:

D. If a system or coplanar torces is in equilibrium. then the algebraic sum of their moments about any point in their plane is zero

Read Explanation:

According to the principle of moments If a system or coplanar torces is in equilibrium. then the algebraic sum of their moments about any point in their plane is zero


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