Simple explanation of three body problem

  • Context: Undergrad 
  • Thread starter Thread starter Obiodin
  • Start date Start date
  • Tags Tags
    Body Explanation
Join the discussion
Ask a follow-up here, or get your own question answered by working scientists, mathematicians and engineers — people, not an autocomplete.
Real named experts · corrections over time · the nuance an AI answer skips
1 reply · 4K views
Obiodin
Messages
5
Reaction score
0
Hiya, I was wondering if one of you clever people here could just affirm something for me. The three body problem : https://en.m.wikipedia.org/wiki/Three-body_problem
In classical mechanics.
Some background, I wanted to write something in a blog about theory and reality and the differences, namely the 20th century preconceptions we have about things. Suffice to say I wanted to say that in classical mechanics that you can’t predict what the outcome is when 3 or more bodies are present.
Is that a correct statement?
I did try reading the Wikipedia page but I didn’t really understand it in plain English!
It seems to say there’s no general analytical solution for it but goes on to some other solution which I not sure amounts to a solution!
So I didn’t want to say something that’s not totally true.
Anyway thanks very much for your time.
Regards.
 
Physics news on Phys.org
Classical mechanics predicts the outcome of a three-body problem just fine. It's just that there is no known general closed-form solution; that is, we can't write down three equations, each with the position of one of the bodies on the left-hand side and some function of time on the right-hand side. Instead we have to use numerical methods to solve the equations of motion, a common situation with complicated differential equations.
 
  • Like
Likes   Reactions: nasu