Is there Rotational inertia of the Solar system as one entity "disk"? Is this even possible?


  1. The angular momentum of a multi-point system in the Solar system - Since the different planets have different mass and orbital periods then how does create angular momentum, inertia in the system?
  2. How can one planet affect another planet in the system from its individual rotation?
  3. Does the solar system exhibit rigid body rotation from the mass distributed over planets?

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    $\begingroup$ What do you mean by that? Could you add a little more clarrification? $\endgroup$ – Max0815 Dec 19 '20 at 1:33
  • $\begingroup$ I think the question here is basically "does the solar system exhibit rigid body rotation and if so, the answer is no. While weak gravitational interactions over long periods of time mean that a torque on one body will eventually affect others and if you pushed on Jupiter carefully enough you could eventually "feel" Saturn, for the most part it's really a bunch of little bits doing their own thing. Stopping Earth in its tracks would not need enough torque to stop the other planets. $\endgroup$ – uhoh Dec 19 '20 at 7:11
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    $\begingroup$ I think OP does not know the angular momentum of a multi-point system enough well yet. The answer is yes. We could explain it. $\endgroup$ – peterh Dec 19 '20 at 9:29
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    $\begingroup$ I edited my question to reopen the discussion. @peterh-ReinstateMonica yes please explain that multi-point system. $\endgroup$ – Majoris Dec 23 '20 at 3:05
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    $\begingroup$ Yay! edited and reopened. $\endgroup$ – uhoh Dec 23 '20 at 23:05

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