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Initial angular velocity = 0rpm = 0rps
Final angular velocity = 2000rpm = 2000/60 rps
Time taken = 20s
Therefore,
v = u + at
2000/60 = a×20
a = 100/60 = 5/3rps²
S = ut + ½at²
S = 0 + ½×5/3×400
= 1000/3 revolutions
= 333.33 revolutions
Hope this is helpful to you
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