Question

According to the law of moments, if a number of coplanar forces acting on a particle are in equilibrium, then

• A. The algebraic sum of their moments about any point in their plane is zero
• B. heir lines of action are at equal distances
• C. The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same
• D. Their algebraic sum is zero

Answer 1

Answer:

C. The algebraic sum of their moments about any point is equal to the moment of their resultant force about the same

According to Varignon's Principle of moments, if coplanar forces acting on a particle are in equilibrium, the algebraic sum of the moments of all forces about any point is equal to the moment of their resultant force about the same point.