A solid sphere of mass M and radius R ha...

A solid sphere of mass M and radius R having tmoment of inertia I about its diameter is recast into a solid dise of radius r and thickness t. The moment of inertia of the disc about an axis passing the edge and perpendicular to the plane remains I. Then R and r are related as

`2/sqrt15 R`

`2/sqrt5R`

`3/sqrt15R`

`sqrt3/sqrt15R`

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