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# Mini-Quiz: Pendulum Exhibits Periodic Motion

by Ron Kurtus (revised 17 December 2016)

Take this Mini-Quiz to check your understanding of the lesson material.

1. What happens when you double the mass of the pendulum bob?

The pendulum swings twice as fast

The pendulum swings half as fast

The speed stays the same

2. Why are pendulums used in clocks?

The constant frequency is used to tell time

They are used for decoration

So you don't need to wind the clock

3. What does the Foucault Pendulum demonstrate?

How fast a large pendulum swings

The Earth's rotation

Changes in the Earth's gravity

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

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## Resources and references

Ron Kurtus' Credentials

### Websites

Simple Pendulum - Hyperphysics explanation

How Pendulum Clocks Work - From How Stuff Works

Pendulum Physlet - Java application and equations for a damped pendulum

The Foucault Pendulum - University of Louisville pendulum

Physics Resources

## Questions and comments

Do you have any questions, comments, or opinions on this subject? If so, send an email with your feedback. I will try to get back to you as soon as possible.

## Students and researchers

www.school-for-champions.com/science/
mini-quiz_pendulum.htm

Please include it as a link on your website or as a reference in your report, document, or thesis.

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