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PARALLELOGRAM
LAW OF VECTOR ADDITION
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| Acccording to the parallelogram law of vector addition: | ||||
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"If
two vector quantities are represented by two adjacent sides or a parallelogram
then the diagonal of parallelogram will be equal to the resultant of these two vectors." |
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EXPLANATION
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Consider
two vectors  .
Let the vectors have the following orientation |
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| parallelogram of these vectors is : | ||||
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| According to parallelogram law: | ||||
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MAGNITUDE
OF
RESULTANT VECTOR |
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| Magintude or resultant vector can be determined by using either sine law or cosine law. | ||||
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