For the Angular Momentum of an Object to Be Conserved

question 308

Multiple Choice

For the angular momentum of an object to be conserved (i.e., to not change) , the

• A) speed of the object must not change.
• B) object must not be acted on by an internal torque (caused, for example, by the muscles in a skater's arms).
• C) object must not be acted on by an outside torque.
• D) size of the object must not change.

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Definitions:

Labyrinthitis

An inner ear disorder that causes inflammation of the labyrinth, leading to vertigo and hearing loss.

Acoustic

Pertaining to sound or the science of sound, especially its production, transmission, and effects.

Myringectomy

A surgical procedure involving the removal of part of the eardrum to treat conditions such as chronic infections or to insert tympanic tubes.

Myringotomy

A surgical procedure to make a tiny cut in the eardrum to relieve pressure caused by excessive fluid accumulation or to insert a tympanostomy tube.