List of top Physics Questions on System of Particles & Rotational Motion asked in Punjab PMET

A thin circular ring of mass $ M $ and radius $ r $ is rotating about its axis with constant angular velocity $ \omega $ . Two objects each of mass $ m $ , are placed gently at the opposite ends of diameter of the ring. The ring now rotates with an angular velocity

Which of the following statements is incorrect?

A diver in a swimming pool bends his head before diving, because it:

A wheel of mass $ 10\,kg $ has a moment of inertia of $ 160\,kg-m^2 $ about its own axis, the radius of gyration will be