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Mini-Quiz: Derivation of Circular Orbits Around Center of Mass

by Ron Kurtus

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

1. What do you compare to find the circular orbital velocity?

Gravitational force and centrifugal force

Radial and tangential velocities

The mass of the larger versus the mass of the smaller object

2. What is the relationship between tangential velocity for circular orbits and mass?

Velocity is independent of the mass of the objects

The velocity of an object is a function of the mass of the other object

The velocity of an object is only dependent on its mass

3. What appears to happen when one object is much larger than the other?

The larger object appears to orbit the much smaller object

The smaller object appears to orbit the much larger object

The objects remain stationary in space

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.

Try to figure things out

Resources and references

Ron Kurtus' Credentials


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

Center of Mass - Wikipedia

Gravitation Resources


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Top-rated books on Gravity

Top-rated books on Gravitation

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Gravitation topics

Mini-Quiz: Derivation of Circular Orbits Around Center of Mass

Gravity and Gravitation

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Center of Mass

Orbital motion

Escape velocity


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