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JEE Main & Advanced Physics Two Dimensional Motion Question Bank Uniform Circular Motion

  • question_answer
    A particle is moving in a circle of radius R with constant speed v, if radius is double then its centripetal force to keep the same speed should be                                    [BCECE 2005]

    A)                         Doubled            

    B)                       Halved            

    C)                         Quadrupled            

    D)                         Unchanged

    Correct Answer: B

    Solution :

                                \[\ F=\frac{m{{v}^{2}}}{r}\]. For same mass and same speed if radius is doubled then force should be halved.            


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