- #1

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I'm looking at GMem(object)/r^2 = m(o)v^2/r

But I do not know if this equation will help or how to connect it together with anything else. Any help would be great.

- Thread starter starbaj12
- Start date

- #1

- 49

- 0

I'm looking at GMem(object)/r^2 = m(o)v^2/r

But I do not know if this equation will help or how to connect it together with anything else. Any help would be great.

- #2

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Do you know the formula for the potential energy of an object a distance R away from a planet - and how this relates to the escape energy?

Do you know how to relate energy to velocity, to translate escape energy into escape velocity?

- #3

arildno

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Hence, what you are lacking, is an equation which yields the escape velocity Ve.

Unless you have that, you cannot compare Vc with Ve!

So, question:

How can you find an equation which can be said to yield Ve?

Post a few of your own thoughts on it, particularly what you think is MEANT with the concept "escape velocity"!

- #4

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The bigger the radius the smaller the potential energy

Ve = square root ( 2GMe/Re) = square root(2gRe)

Is this what you are talking about?

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- #6

arildno

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This is correct!starbaj12 said:

The bigger the radius the smaller the potential energy

Ve = square root ( 2GMe/Re) = square root(2gRe)

Is this what you are talking about?

Now compare Ve and Vc!

- #7

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I got it!

Thank you arildno

Thank you arildno

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