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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

`1600 ms^(-2)`

B

`4740 ms^(-2)`

C

`2370 ms^(-2)`

D

`5055 ms^(-2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Acceleration of a point at the tip of the blade
= centripetal acceleration
`= omega^(2) R = (2pi upsilon)^2R`
`=(2xx(22)/(7) xx(1200)/(60))^2 xx30/100 = 4740 ms^(-2)`
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