From a disc of radius R and mass M, a circular hole of diameter R, whose rim passes through the centre is cut. What is the moment of inertia of the remaining part of the disc, about a perpendicular axis, passing through the centre?
15MR2/32
13MR2/32
11MR2/32
9MR2/32
Moment of inertia for disc -
- wherein
About an axis perpendicular to the plane of disc & passing through its centre .
Option 1)
15MR2/32
This is incorrect option
Option 2)
13MR2/32
This is correct option
Option 3)
11MR2/32
This is incorrect option
Option 4)
9MR2/32
This is incorrect option