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

  • question_answer
    A ball is moving to and fro about the lowest point A of a smooth hemispherical bowl.  If it is able to rise up to a height of 20 cm on either side of A, its speed at A must be (Take = 10 m/s2, mass of the body 5 g)                           [JIPMER 2000]

    A)             0.2 m/s

    B)                      2 m/s

    C)             4 m/s  

    D)             4.5 \[m{{s}^{1}}\]

    Correct Answer: B

    Solution :

                    \[v=\sqrt{2gh}=\sqrt{2\times 10\times 0.2}=2\,m/s\]


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