The period of a simple pendulum, whose bob is a hollow metallic sphere, is 
. The period is 
when the bob is filled with sand, 
when it is filled with mercury, and 
when it is half filled with mercury. Which of the following options is true?
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Time period of pendulum doesn't depend upon mass but it depends upon length (distance between point of suspension and center of mass).
In the last case, center of mass lowers, which in turn increases the length. So, 
will be more than 
and 
.
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