Question
When two vectors vector A and vector B are drawn from a common point, the angle between them is phi.
If vector A and vector B have the same magnitude, for which value of phi will their vector sum have the same magnitude as vector A or vector B?
If vector A and vector B have the same magnitude, for which value of phi will their vector sum have the same magnitude as vector A or vector B?
Answers
When the triangle of forces is an equilateral triangle, i.e. when φ=120°. So Acos(φ/2)+Bcos(φ/2)=A/2+B/2=A=B
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