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1 August, 21:37

A high-speed sander has a disk of radius 4.71 cm that rotates about its axis at a constant rate of 1547 rev/min. Determine the angular speed of the disk. Answer in units of rad/s.

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  1. 2 August, 00:08
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    81.01rad/s

    Explanation:

    From the question, we are given the radius r = 4.71cm

    The rate of rotation ∆θ = 1547rev/min

    The angular speed w = ∆θ/∆t

    In circular motion, angular speed is the time rate with which the angular displacement occurs. It is also referred to as the rotational speed.

    Firstly we need to convert the the 1547rev/min to rad/s

    w = 1547 * 2π/60

    w = 4860.674/60

    w=81.01rad/s
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