A circular hole of radius 
is cut out from a uniform circular disc of radius 
. The centre of the hole is at 
, from the centre of the original disc. The distance of centre of gravity of the resulting flat body from the centre of the original disc is
Text Solution
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Given, radius of circular hole, 
Radius of circular disc, 
Mass of disc, 
Mass of hole, 
If we assume the centre of mass of hole and disc to be at centre, then
The 
-coordinate of the centre of mass of the remaining portion of the disc will be
Hence, distance of centre of gravity of the resulting flat body from the centre of the original disc will be 
left side.
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