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starting from rest, a disk rotates about its central axis with constant angular acceleration. In 4 seconds, it has rotated 50 rad.

What was the angualr acceleration during this time?

What is the instantaneous angular velocity of the disk at the end of the 4 seconds?

  • physics -

    also, assuming that the acceleration does not change, through what additional angle will the disk turn during the next 7 seconds?

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