A solid sphere of radius R is placed on smooth horizontal surface. A horizontal force F is applied at height h from the lowest point. For the maximum acceleration of centre of mass, which is correct ?

A disc is rotating with angular speed $$\omega $$. If a child sits on it, what is conserved

A circular disc is to be made by using iron and aluminium so that it acquired maximum moment of inertia about geometrical axis. It is possible with

For the adjoining diagram, the correct relation between I₁, I₂, and I₃ is, (I-moment of inertia)