A person with a mass of M kg stands in contact against the wall of a cylindrical drum of radius r rotating with an angular velocity 
. If the coefficient of friction between the wall and the clothing is 
, the minimum rotational speed of the cylinder which enables the person to remain stuck to the wall when the floor is suddenly removed is-
A
min = 
B
min = 
C
min = 
D
min = 
Text Solution
Verified by ExpertsThe correct answer is:
A
mr ω 2 = N and f = mg
but f ≤ μ N ∴ mg ≤ μ mr ω 2 ω
2 ≥ 
∴ ω min = 
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