Q
According to principle of moments_________________?
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A
A. If a system of coplanar forces is in equilibrium, then their algebraic sum is zero
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B
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
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C
C. The algebraic sum of the moments of any two forces about any point is equal to moment of theiwesultant about the same point
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D
D. Positive and negative couples can be balanced
Correct Answer:
B. 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
