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Problem 12.2 An 8.0-cm-diameter hard disk spinning at 7200 rpm can stop in 13 revolutions.Part A What is the magnitude of the angular acceleration? Express

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Problem 12.2 An 8.0-cm-diameter hard disk spinning at 7200 rpm can stop in 13 revolutions.Part A What is the magnitude of the angular acceleration? Express your answer in radians per second squared. IVO AEd 10 0 ? rad/s2 Submit Request Answer Part B How long does it take the disk to come to a halt? Express your answer with the appropriate units. HA - 0 E ? At = Value Units Submit Request

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