A skater has a moment of inertia of 3 kg.m2 ( kilogram.meter squared) when her arms are outstretched and 1 kg.m2( kilogram.meter squared) when her arms are brought to her sides. She starts to spin at the rate of 1 revolution per second when her arms are outstretched and then pulls her arms to her sides. What is her final angular momentum? *

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