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NEET Sample Paper NEET Sample Test Paper-90

  • question_answer
    A bucket tied at the end of a 1.6m long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill when the bucket is at the highest position?

    A) 4 m/sec

    B)        6.25 m/sec

    C) 16 m/sec           

    D)         8 m/sec

    Correct Answer: A

    Solution :

    [a] Since water does not fall down, therefore the velocity of revolution should be just sufficient to provide centripetal acceleration at the top of vertical circle. So, \[v=\sqrt{(gr)}=\sqrt{\{10\times (1.6)\}}=\sqrt{(16)}=4\,m/sec.\]


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