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MGIMS WARDHA MGIMS WARDHA Solved Paper-2007

  • question_answer
    A 0.5 kg ball moves in a circle of radius 0.4 m at a velocity of 4 m/s. The centripetal force on the ball is.

    A) 10 N                                      

    B) 20 N

    C) 40 N                                      

    D) 80 N

    Correct Answer: B

    Solution :

    \[F=\frac{m{{v}^{2}}}{r}\] \[F=\frac{0.5\times 4\times 4}{0.4}=\frac{8.0}{0.4}\] \[F=\frac{80}{4}=20\,N\]


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