A Pendulum of Length L Is Suspended from the Ceiling

question 45

Multiple Choice

A pendulum of length L is suspended from the ceiling of an elevator.When the elevator is at rest the period of the pendulum is T.How would the period of the pendulum change if the supporting chain were to break,putting the elevator into freefall?

• A)The period does not change.
• B)The period increases slightly.
• C)The period decreases slightly.
• D)The period becomes zero.
• E)The period becomes infinite because the pendulum would not swing.

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Definitions:

Interlocking Crystals

A texture in igneous rocks where the crystals are so closely fitted together that they interlock, providing strength and coherence to the rock.

Insulated

Protected from heat loss or gain by surrounding with material that reduces heat transfer, often used in reference to buildings or electrical components.

Dense

Having a high mass per unit volume; closely compacted in substance.

Arête

A sharp, narrow ridge found in rugged mountains, formed by the erosion of two glaciers side by side.