Consider a situation where an ice skater spins without friction in the ice with her arms outstretched. Then he picks up his arms to his body, reducing his moment of inertia. Its angular momentum is preserved, so as it reduces its moment of inertia, it increases its angular velocity and rotates faster. Compared to hers initial rotational kinetic energy, what is hers final rotational kinetic energy like? explain with fundamentals of physical

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