A Pendulum Clock Uses a Simple Pendulum as Its Timing

question 77

Multiple Choice

A pendulum clock uses a simple pendulum as its timing device. The clock is correct at noon. The next day, when the clock reads noon, the actual time is 11:50 a.m. What is the fractional change in pendulum length that must be made so the clock runs at the correct rate?

• A)1.40% longer
• B)16.7% longer
• C)0.699% longer
• D)0.699% shorter
• E)2.84% longer

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Definitions:

Phenomenon

An observable event or fact, especially one that is unusual, important, or otherwise notable.

Quantum Theory

A fundamental theory in physics that provides a description of the physical properties of nature at the scale of atoms and subatomic particles.

Graphic Representation

The use of visual elements, such as charts and graphs, to present data or information.

Phenomenon

An observable event or fact that can be scientifically described and investigated.