Question

a person is in contact with the inner wall of a vertical hollow cylinder of radius 1m, remains in equilibrum with out slipping down as cylinder is rotated about its vertical axis with angular velocity 3.5rad/s. the minnimum cofficient of static friction between person and wall of cylinder such that the does not slip down is

Answer 1

Answer:

Correct option is

D

3.5 rad/s

For equillibrium

Max. Friction will balance Mg

∴μN=Mg ----------- (1)

where N=Mω

2

R ----------- (2)

μMω

2

R=Mg

ω=

μR

g

=3.54 rad/s