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JEE Main & Advanced Physics Two Dimensional Motion Question Bank Non-uniform Circular Motion

  • question_answer
    Figure shows a body of mass m moving with a uniform speed v along a circle of radius r. The change in velocity in going from A to B is                                     [DPMT 2004]

    A)             \[v\sqrt{2}\]

    B)           \[v/\sqrt{2}\]

    C)                 \[v\]

    D)                 Zero

    Correct Answer: A

    Solution :

                    \[\left| \overrightarrow{\Delta v} \right|=2v\sin (\theta /2)=2v\sin \left( \frac{90}{2} \right)=2v\sin 45\]\[=v\sqrt{2}\]


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