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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A horizontal disc rotates freely about a vertical axis through its central. A ring, having the same mass and radius as the disk is now gently placed on disc. After some time, the two rotates with a common angular velocity.

A horizontal disc rotates freely about a vertical axis through its central. A ring, having the same mass and radius as the disk is now gently placed on disc. After some time, the two rotates with a common angular velocity.

A horizontal disc rotates freely about a vertical axis through its central. A ring having the same mass and radius as the disk is now gently placed on disc. After some time the two rotates with a common angular velocity.