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20 April, 22:46

A wheel rotates clockwise 6 times per second. What will be its angular displacement after 7 seconds? Answer should be rounded to 2 decimal places

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Answers (2)
  1. 21 April, 01:38
    0
    The frequency of the wheel is the number of revolutions per second:

    f = / frac{N_{rev}}{t} = / frac{10}{1 s}=10 Hz

    And now we can calculate the angular speed, which is given by:

    /omega = 2 / pi f=2 / pi (10 Hz) = 62.8 rad/s in the clockwise direction.
  2. 21 April, 02:22
    0
    (6 rotations/sec) x (7 sec) = 42 rots

    Each rotation is 360 degrees or 2π radians.

    42 rotations = 15,120 degrees

    or

    84π radians.
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