A ring and a disc of same mass `m` and same radius `R` are joinged concentrically.
Channel: Doubtnut
Date: 2020-04-05

A ring and a disc of same mass `m` and same radius `R` are joinged concentrically. This system is placed on a smooth plane with the common axis parallel to the plane as shown in figure. A horizontal force `F` is applied on the system at a point which is at a distance `x` from the centre. The value of `x` so that it starts pure rolling is  img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_PHY_DPP_66_XI_E01_530_Q01.png" width="80%"