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Question

How to find resultant of two vectors?


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Solution

Vectors

  1. A vector is a physical quantity that has both magnitudes and directions.
  2. Acceleration, velocity, and displacement are examples of vectors.

To find the resultant of two vectors

If two vectors P and Q directed along OA and OB, then the resultant of two vectors R=P+Q will be towards the diagonal OC.

The magnitude of the resultant vector is defined by the form R=P2+Q2+2PQcosθ, where θ is the angle between two vectors.

The diagrammatic representation of the vectors and the resultant is,

State parallelogram law of vector addition. Find the magnitude and  direction of the resultant of two vectors vec A and vec B inclined at an  angle theta with each other by using


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