Which is true?

A ∑F = ∑Fx + ∑Fy + ∑Fz
B ∑F = -(∑Fx + ∑Fy + ∑Fz)
C ∑F = ∑Fxi + ∑Fyj + ∑Fzk
D ∑F = -(∑Fxi+ ∑Fyj + ∑Fzk)

Correct Answer: ∑F = ∑Fxi + ∑Fyj + ∑Fzk

The total of two or more forces is equal to the sum of their respective axis’s components. That is the resultant adds up all the components of the forces in their respective axis, whether it may be x, y or z axis.
Bissoy MCQ
#Engineering Mechanics #Cartesian Vectors

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