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The number of revolutions through which a pulley will rotate from rest if its angular acceleration is increased uniformly from zero to 12 rad per sec2 during 4 sec and then uniformly decreased to 0 rad per sec2 during the next 3 sec would be

[A].	3.2	[B].	11.6
[C].	17.7	[D].	26.74
[E].	46.4

Answer: Option D

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