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11th Class Physics Motion in a Straight Line / सरल रेखा में गति Question Bank Motion In A Plane Conceptual Problems

  • question_answer
    What should be the angle \[\theta \] between two vectors \[\vec{A}\] and \[\vec{B}\] for their resultant \[\vec{R}\] to be maximum?

    Answer:

                    \[R=\sqrt{{{A}^{2}}+{{B}^{2}}+2AB\cos \theta }\] R will be maximum when \[\cos \theta =+1\] or \[\theta ={{0}^{\circ }}\] \[{{R}_{\max }}=A+B\].


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