A solid sphere of radius 10 cm is rotating about an axis which is at a distance 15 cm from its centre. The radius of gyration about this axis is 
. The value of 
is
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(265) Using the parallel axis theorem for radius of gyration:
where 
is the radius of gyration about the center of mass and 
is the distance from the center.
For a solid sphere:
, so 
With 
and 
:
Since 
, we have 
.
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