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2014-10-10T15:05:33+05:30

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Blades are rotating at the rate 600 rpm.
angle covered in 1 revolution = 2π
angle covered in 600 revolutions = 600×2π = 1200π
time taken = 1 minute = 60s

angular velocity =  \frac{1200 \pi }{60} = 20π rad/s
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