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Homework Help: Simple question about rotational motion

  1. Dec 26, 2011 #1
    Its not actually a homework . i am just wondering .
    If we have 2 masses M and m where m rotates about M on either orbit1 of radius R with speed V or orbit 2 of radius r with seepd v , wouldn't its speed ratio V/v equal the following

    V/v = (sqrt(GM/R))/(sqrt(GM/r)) where G is gravitation constant :/ ??
     
  2. jcsd
  3. Dec 26, 2011 #2
    Nvm what is written . It is true for Circular orbitals only :)
     
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