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Question
Explain why it necessary for a physical quantity to be a vector to obey commutative law of addition?
Explain why it necessary for a physical quantity to be a vector to obey commutative law of addition?
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Solution
It is necessary because the sense of direction and magnitude of the resultant of two vectors added is not changed when the vectors are interchanged.
R = A +B = B+A
It is necessary because the sense of direction and magnitude of the resultant of two vectors added is not changed when the vectors are interchanged.
R = A +B = B+A
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