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29 April, 03:09

A wheel is observed to rotate 5 complete revolutions in 25 seconds. What is its angular speed

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  1. 29 April, 03:58
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    1.26 rad/s

    the first step is to find the frequency of the wheel.

    The wheel rotates at rate of 5 revolutions in 25 seconds. The frequency is the number of revolutions per second.

    frequency (f) = 5/25

    = 1/5

    = 0.2 Hz

    Angular velocity = 2πf

    = 2*π*0.2

    = 0.4π rad/s or

    = 1.26 rad/s
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