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28 August, 14:31

The blade of a lawn mower is rotating at an angular speed of 128 rad/s. The tangential speed of the outer edge of the blade is 32 m/s. What is the radius of the blade?

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  1. 28 August, 14:49
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    0.25m

    Explanation:

    Using the expression that relates the angular velocity (w) and the linear velocity (v).

    v = wr where;

    w is the angular speed = 128rad/s

    v is the linear speed = 32m/s

    r is the radius

    r = v/w

    r = 32/128

    r = 0.25m

    The radius of the blade is 0.25m
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