Two satellites of the Earth move in a common plane along circular orbits , the radii being r and r-[tex]\Delta[/tex]r ( [tex]\Delta[/tex]r << r ). What is the time interval b/w their periodic approaches to each other over the min. distance . Take M to be the mass of the earth
M = 6 * 10 24 kg , r = 7000 km , [tex]\Delta[/tex]r = 70 km ).
The Attempt at a Solution
i m unable to understand the quesn....