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9 February, 21:48

An airplane flies in a horizontal circle of radius 500 m at a speed of 150 m/s. If the plane were to fly in the same 500 m circle at a speed of 300 m/s, by what factor would its centripetal acceleration change

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  1. 10 February, 00:42
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    By Factor of 4

    Explanation:

    The expression for centripetal acceleration is given as,

    a = v²/r ... equation 1

    Where a = centripetal acceleration, v = speed, r = radius of the circle.

    Case 1

    Given: v = 150 m/s, r = 500 m

    Substitute into equation 1

    a = 150²/500

    a = 22500/500

    a = 45 m/s².

    Case 2

    Given: v = 300 m/s, r = 500 m

    Also substitute into equation 1

    a = 300²/500

    a = 180 m/s²

    Factor of change of the acceleration = 180/45

    Factor of change of the acceleration = 4.

    Hence the acceleration will change by a factor of 4
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