Question

A uniform disc is rolling on a horizontal surfa e. At a certain instant B is the
point of contact and A is at height 2R from ground, where R is radius of disc.
(A) The magnitude of the angular momentum of the disc about B is thrice
that about A.​

Answer 1

The magnitude of the angular momentum of the disc about

b is thrice that about A

The angular momentum of the disc about A anticlockwise

The angular momentum of the disc about B is clockwise

The angular momentum of the disc about about A is equal to that about B.

Answer :  A::B::C