What is Commutative law ,prove that addition vectors obeys it.
class - 11 , Subject - Physics
Topic - Vectors
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The Commutative law states that the order of addition doesn't matter, that is : A+B is equal to B+A. 2 The Associative law, which states that the sum of three vectors does not depend on which pair of vectors is added first, that is: (A+B)+C=A+(B+C).
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If the order of addition of two vectors is reversed then, their resultant " Vectors remains unchanged "
in the figure (see attachment)
In ∆OAB by ∆-law of Vector addition
---(1)
And in ∆OCB by ∆-law of vector addition
---(2)
Now, Value Putting in equation 2 from 1
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What is ∆ law of vector addition?
if two vector acting on a particle are represented by the two sides of a triangle in the same order then their resultant vector is completely represented by the third side of triangle taken in opposite order.
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