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28 November, 08:54

A wheel on a watermill turns halfway every 4.0 s. What is the wheel's angular velocity?

A. 0.39 rad/s

B. 2.5 rad/s

C. 3.1 rad/s

D. 0.79 rad/s

E. 13 rad/s

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Answers (1)
  1. 28 November, 19:57
    0
    A revolution equals 2*pi radians.

    As the wheel rotates half every 4 seconds, then it means that it rotates half revolution.

    Thus, the angular velocity of the wheel is given by:

    w = (pi) / (4) = 0.79 rad / sec

    answer

    The wheel's angular velocity is 0.79 rad / sec
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