**7) A man, with his arms at
his sides, is spinning on a light turntable that can ****rotate
freely about a vertical frictionless axis. When he extends his arms:
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A1 his angular velocity will decrease.
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A2 his angular momentum will increase.
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A3 his angular velocity remains the same.
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A4 his rotational inertia decreases.
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A5 his rotational kinetic energy remains the same**.