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24 August, 12:03

The tips of the blades of the Chinook helicopter lie on a circle of diameter of 18.29 meters. What is the airspeed v of the tip of the blades when they are rotating at 225 rpm? Answer in meters per second.

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  1. 24 August, 12:14
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    The linear speed is 215.46 m/s

    Explanation:

    Given:

    Diameter, d = 18.29m

    Radius, r = 18.29 / 2 = 9.145m

    Angular speed, ω = 225 rpm

    ω = 225 X π/30

    ω = 23.56 rad/s

    Linear speed, v = ?

    We know

    v = ωr

    v = 23.56 X 9.145

    v = 215.46 m/s

    Therefore, linear speed is 215.46 m/s
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