An electric fan has blades of length 30 cm as measured from the axis of rotation .If the fan is rotating at 1200 r.p.m., then the acceleration of a point on the tip of the blade is ` ("take" pi^(2)=10)`
A
`1600m//s^(2)`
B
`3200m//s^(2)`
C
`4800 m//s^(2)`
D
`600m//s^(2)`
Text Solution
Verified by Experts
The correct Answer is:
C
` a= r omega ^(2) = r. 4pi ^(2) n^(2) = 0.3 xx4 pi ^(2) xx 400 = 4800 m//s^(2)`
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