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    Mechanics, rotation, angular deceleration. Part 2

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    https://brainmass.com/physics/angular-momentum/mechanics-rotation-angular-deceleration-part-2-26738

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    initial rotaional speed
    wo = 800 rpm = 800/60 rps = 2*pi*40/3 rad/s = 80*pi/3 rad/s
    Final rotational speed,
    wf = 0
    time t = 6 s
    angular acceleration alpha = ?
    wf = wo + alpha*t
    => alpha = - ...

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