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Mini-Quiz: Center of Mass Motion Components

by Ron Kurtus (revised 14 May 2011)

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



1. What is the relationship between the radial and tangential velocity components?

The radial component is always larger

The components are perpendicular to each other

The components have no real relationship

2. In which direction do the objects move on the axis between them as viewed from the CM?

Toward each other or away from each other

Objects only move toward each other because of gravitation

It depends on the magnitude of the tangential velocity

3. What is necessary for objects to orbit the CM?

Their tangential velocities must be sufficient for orbits to occur

The objects must have the same mass

Two objects always orbit their CM

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

Center of Mass Calculator - Univ. of Tennessee - Knoxville (Java applet)

Center of Mass - Wikipedia

Gravitation Resources

Books

Top-rated books on Gravity

Top-rated books on Gravitation


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