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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 an angular velocity `omega`. If `mu` is the coefficient of friction between the wall and the person, the minimum rotational speed which enables the person to remain stuck to the wall is

A

`sqrt(g//mur)`

B

`g//sqrt(mu r)`

C

`sqrt((mu r)/(g))`

D

`sqrt((gr)/(mu))`

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The correct Answer is:
A
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