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All the vectors quantities obey:

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All the vectors quantities obey:

(a) Parallelogram law of addition

(b) Parallelogram law of multiplication

(c) Parallelogram law of addition of square root of their magnitudes

(d) Parallelogram law of addition of square of their magnitudes

This question was posed to me during a job interview.

The doubt is from Addition of a System of Coplanar Forces in chapter Force Vectors of Engineering Mechanics

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Correct choice is (a) Parallelogram law of addition

Explanation: All the vectors quantities obey parallelogram law of addition. Two vectors A and B (can be called as component vectors) are added to form a resultant vector. R = A+B.

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