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A merry-go-round rotates from rest with an angular acceleration of 2.00 rad/s2. How long does it...

  1. A merry-go-round rotates from rest with an angular acceleration of 2.00 rad/s2. How long does it take to rotate through (a) the first 4.00 rev. (b) At the 4.00 rev angle the acceleration immediately changes to 1.5 rad/s2 , how long does it take to rotate the next 4.00 rev?
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