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Mini-Quiz: Gravity Constant Factors

by Ron Kurtus (revised 21 February 2011)

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



1. What does the radius of the Earth signify in deriving the gravity constant?

It is not a factor in the derivation

It is an extremely large number that makes gravity constant

It is the separation between the Earth's center and that of an object on the surface

2. What factors affect the value of gravity?

The radius of the Earth varies in different locations, plus the effect of the Earth's rotation

The atmosphere is thinner on mountain tops, affecting the gravity

Calculating errors, the effect of the Sun on gravity and the seasons

3. What happens to g as you reach higher altitudes?

It gets larger, approaching infinity

Nothing, since g is a constant

It becomes a smaller value

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.


Move on a steady course in your life


Resources and references

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Radius of the Earth - Universe Today

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Top-rated books on Simple Gravity Science

Top-rated books on Advanced Gravity Physics


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