A ring of mass M and radius R is rotating with angular speed ω about a fixed vertical axis passing through its centre O with two point masses each of mass 
at rest at O. These masses can move radially outwards along two massless rods fixed on the ring as shown in the figure. At some instant the angular speed of the system is 
and one of the masses is ata distance of 
from O. At this instant the distance of the other mass from O is : 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
By conservation of angular momentum
MR 2 ω = 
R 2 = 
225 R 2 – 209 R 2 = 25 d 2
d = 
d = 
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