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16 August, 21:30

how many revolutions are completed by a top spinning with a constant angular velocity of 3pi radians during a 20 sec time interval

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  1. 16 August, 23:32
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    30

    Explanation:

    Assuming the velocity is 3π radians per second, the top will spin through an angle of ...

    (3π radians/s) (20 s) = 60π radians

    Since each revolution is 2π radians, that is ...

    (60π radians) / (2π radians/revolution) = 30 revolutions
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