# The Naked Scientists Forum

### Author Topic: Is this a reasonable representation of gravitational feedback?  (Read 1035 times)

#### jeffreyH

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##### Is this a reasonable representation of gravitational feedback?
« on: 21/02/2014 13:06:09 »
I have calculated the gravitational feedback of 99 earths side by side and each touching at the surface much like a string of beads arrangement. The graph shows the increase in gravitation through the chain of earth masses from one end to the other.
« Last Edit: 21/02/2014 13:11:34 by jeffreyH »

#### RD

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##### Re: Is this a reasonable representation of gravitational feedback?
« Reply #1 on: 21/02/2014 13:37:53 »
Surely in the middle of the chain the the gravitational force from each half would cancel each other out,
like at L1 ... https://en.wikipedia.org/wiki/Lagrangian_point#L1

#### jeffreyH

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##### Re: Is this a reasonable representation of gravitational feedback?
« Reply #2 on: 21/02/2014 14:23:32 »
Surely in the middle of the chain the the gravitational force from each half would cancel each other out,
like at L1 ... https://en.wikipedia.org/wiki/Lagrangian_point#L1

Yes that would be a valid observation if I were modelling the field in both directions. This is a simplified unidirectional representation. I could plot a two way feedback but that would not be my original intention. This may sound like a strange way of viewing this but I have my reasons for doing so at this point in time. Look at it as if each earth is added one at a time and we measure g as we go along the line.
« Last Edit: 21/02/2014 14:26:29 by jeffreyH »

#### jeffreyH

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##### Re: Is this a reasonable representation of gravitational feedback?
« Reply #3 on: 22/02/2014 22:41:25 »
Taking into account the gravitational cancellation we now have the following. Each point is a measurement of g at the point where one earth touches the next at the surface. The yellow plot shows g at each point after cancellation. If combined with the model for escape velocity from the centre of a planet it is assumed that the yellow plot would then resemble a wave equation with the amplitude varying away from the combined centre of gravity. This assumption of course may be wrong.
« Last Edit: 22/02/2014 22:44:02 by jeffreyH »

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##### Re: Is this a reasonable representation of gravitational feedback?
« Reply #3 on: 22/02/2014 22:41:25 »