A Ballet Dancer Is Spinning in the Middle of a Horizontal

question 10

Multiple Choice

A ballet dancer is spinning in the middle of a horizontal frictionless stage. Which of the following things could he change by moving parts of his body or his whole body? (There could be more than one correct choice.)

• A) his total kinetic energy
• B) his translational kinetic energy
• C) his rotational kinetic energy
• D) his angular momentum
• E) his moment of inertia
• F) the horizontal component of his linear momentum
• G) the location of his center of mass (or center of gravity)

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