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An electric fan has blades of length 30 ...

An electric fan has blades of length `30 cm` as measured from the axis of rotation. If the fan is rotating at `1200 rpm`, find the acceleration of a point on the tip of a blade.

A

`1600ms^(-2)`

B

`4737ms^(-2)`

C

`2370ms^(-2)`

D

`5055ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
here , acceleration of a point at the tip of the blade
=centripetal acceleration
`omega^2R=(2pif)^2R`
`=(2xx22/7xx1200/60)^2xx30/100`
`=4737.4ms^(-2)`
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