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A child is standing with folded hands at...

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 strectches his arms so that the moment of inertia of the system doubles. The kinetic energy of the system now is.

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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.

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