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A person stands in contact against a wal...

A person stands in contact against a wall of cylindrical drum of radius 'r' rotating with angular velocity `omega` .If `mu` is coefficient of static fiction between the wall and the person , then the minium rotational speed which enables the person to remain stuck to the wall will be

A

`sqrt (g)/(mur)`

B

`sqrt (mur)/(g) `

C

`sqrt(2g)/(mur)`

D

`sqrt (gr)/(mu)`

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