The tip of the blade of a fan moves...
Question
The tip of the blade of a fan moves at 350 rpm. Find the average speed of the tip in minutes if the blade length from the centre is
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The tip of the blade of a fan moves at 350 rpm. Find the average speed of the tip in minutes if the blade
length from the centre is ( 1 mathrm{m} )
(a) ( 2200 mathrm{mmin}^{-1} )
(b) ( 110 mathrm{mmin}^{-1} )
(c) ( 350 mathrm{mmin}^{-1} )
(d) Zero

JEE/Engineering Exams
Physics
Solution
176
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The tip of the blade of a fan moves at 350 rpm. Find the average speed of the tip in minutes if the blade length from the centre is
Fullscreen

The angular velocity is ( mathrm{w} )
Lets calculate it:
350 rev per minute
How many revolutions per second?
( 350 / 60=5.83 ) revolutions per second.
One revolution ( =2 pi )
Angular velocity ( =2 pi times 5.83=11.66 pi ) radians
The linear velocity ( =r w )
Where ( r= ) radius, wengular velocity
( V=1 times 11.66 pi=36.63 mathrm{m} / mathrm{s} )

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