A disk is initially at rest and a constant angular


A disk is initially at rest and a constant angular acceleration of 4 rad/s2 is applied to it counter-clockwise (about its center). After 5.1 seconds, the constant angular acceleration value switches to 8 rad/s2 clockwise. How many revolutions, in total, are made before the disk is stopped again?

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Physics: A disk is initially at rest and a constant angular
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