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| 1. |
Expression for traingle law of vector addition |
| Answer» thnx to all ji..for ur answers<br>thnx dear<br>if 2 vectors can be represented both in magnitude and direction by the 2 side of ⛛ taken in the same oder, then their resultant is represented completely, both in magnitude and direction, by the 3rd side of the ⛛ taken in the opposite oder.<br>Statement of Triangle LawIf 2 vectors acting simultaneously on a body are represented both in magnitude and direction by 2 sides of a triangle taken in an order then the resultant(both magnitude and direction) of these vectors is given by 3rd side of that triangle taken in opposite order.Derivation of the lawConsider two vectors P and Q acting on a body and represented both in magnitude and direction by sides OA and AB respectively of a triangle OAB. Let θ be the angle between P and Q. Let R be the resultant of vectors P and Q. Then, according to triangle law of vector addition, side OB represents the resultant of P and Q. | |