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Mini-Quiz: Cavendish Experiment to Measure Gravitational Constant

by Ron Kurtus (revised 13 February 2015)

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



1. Why did Cavendish get credit for finding G?

He was the first person to measure G

It was a mistake, since Newton really discovered G

Because others used his experiment to find G

2. For what is the mirror used in the Cavendish Experiment?

To reflect any light that may disturb the experiment

To measure the angle and oscillation period

There was no mirror used in the experiment

3. Why do the balls oscillate around the equilibrium point?

The value of G varies, depending on the angle

Inertia causes them to go past the point and the twisted wire acts as a spring

No one has been able to figure that out yet

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.


Find out things through experiments


Resources and references

Ron Kurtus' Credentials

Websites

Cavendish Experiment - Harvard University Natural Science Lecture Demonstrations

The Cavendish Experiment - Good illustrations of experiment from Leyden Science

Cavendish experiment - Wikipedia

Gravitation Resources

Books

Top-rated books on Gravity

Top-rated books on Gravitation


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.


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