A child is standing with folded hands at the center of a platform rotating about its central axis. The kinetic energy of the system is `K`. The child now stretches his arms so that the moment of inertia of the system doubles. The kinetic energy of the system now is

A child is standing wiith hands at the centre of a platform rotating about its central axis. The kinetie energy of the system K. The chilid now seretches his arms so that of the kinetic energy of the system is now.

A horizonral circular plate is rotating about a vertical axis passing through its centre with an angular velocity omega_(0) . A man sitting at the centre having two blocks in his hands stretches out his hands so that the moment of inertia of the system doubles. If the kinetic energy of the system is K intially, its final kinetic energy will be

A horizontal circular plate is rotating about a vertical exis passing through its centre with an angular velocity omega_0 . A man sitting at the centre having two blocks in his hands stretches out his hands so that the moment of inertia of the system doubles. if the kinetic energy oif the system is K initially, its final kinetic energy will be

Kinetic energy of a wheel rotating about its central axis is E. Then kinetic energy of another axis is E. Then kinetic energy of another wheel having twice the moment of inertia and half the angular momentum as that of the first wheel is

A child is standing with his two arms outstretched at the centre of a turntable that is rotating about its central axis with an angular speed omega_0 . Now, the child folds his hands back so that moment of inertia becomes 3 times the initial value. The new angular speed is.

The angular velocity of a body rotating about a given axis is doubled. Its kinetic energy

A flywheel rotating about a fixed axis has a kinetic energy of 225 J when its angular speed is 30 rad/s. What is the moment of inertia of the flywheel about its axis of rotation?

A fly wheel rotating about a fixed axis has a kinetic energy of 360 J . When its angular speed is 30 rad s^(-1) . The moment of inertia of the wheel about the axis of rotation is

A body rotating about a fixed axis has a kinetic energy of 360 J when its angular speed is 30 rad/sec. The moment of inertia of the wheel about its axis of rotation is