Q.

According to principle of moments

  • AIf a system of coplanar forces is in equilibrium, then their algebraic sum is zero
  • BIf a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero
  • CThe algebraic sum of the moments of any two forces about any point is equal to moment of the resultant about the same point
  • DPositive and negative couples can be balanced
Correct Answer : (B)

If a system of coplanar forces is in equilibrium, then the algebraic sum of their moments about any point in their plane is zero

Hints :

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

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