Question
Sat August 13, 2011 By:
 

A and B are two vectors having the same magnitude.What is the condition that (i)the vector sum A+B and (ii)the vector difference A-B have same magnitude as A and B?

Expert Reply
Mon August 15, 2011
For the vector sum A+B to have the same magnitude as the two vectors A and B, the angle between the vectors must be 120o .
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