Experts pls solve using the relation T = 2pi root(R/g) for time period of satellite. ( No links) urgent...

Experts pls solve using the relation T = 2pi root(R/g) for time period of satellite. ( No links) urgent... ne satellite of mass m is at a distance r fmm earth's Centre and the other of mass 2m is at a distance 2r from earth's Centre. What is the ratio of their time periods? CTION-B:-