A number of holes are drilled along a diameter of a disc of radius 
. To get minimum time period of oscillations the disc should be suspended from a horizontal axis passing through a hole whose distance from the centre should be
A
B
C
D
Zero
Text Solution
Verified by ExpertsThe correct answer is:
B
where 
Here 
For minimum time period 
should be minimum 
⇒ ⇒ 
⇒ ⇒ 
⇒ ⇒ 
.
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