Symbol " Σ " is known as _.
Correct answer: D. Summation
- A. Pi
- B. Resultant
- C. Power
- D. Summation
Explanation
The symbol ∑, read as 'sum,' represents summation in mathematics. It is used to denote the total sum of a series of terms that follow a specific pattern. While Pi, Resultant, and Power are all valid terms in mathematics, they do not represent the symbol Σ and its specific meaning.
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About Vectors and Equilibrium
Vectors have magnitude and direction, unlike scalars, and are combined by head-to-tail or parallelogram methods. Work covers rectangular components, equilibrium when the resultant force is zero, the scalar product for work and projections, and the vector product for torque and cross-product direction using the right-hand rule.
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