A disc is given an initial angular velocity ${\omega }_0$ and placed on a rough horizontal surface as shown in figure. The quantities which will not depend on the coefficient of friction is/are

In the situation given, a force $F$ is applied at the top of sphere. Study following statements.

A ring rolls without slipping on a horizontal surface. At any instant, its position is as shown in the figure. Then

Three spools $A,B$ and $C$ each having moment of inertia $I=M{R}^2/4$ are placed on rough ground and equal force $F$ is applied at positions as shown in Figs, $\left(\mathrm{a}\right),\mathrm{}\left(\mathrm{b}\right)$ and $\left(\mathrm{c}\right)$ . Then