Two bodies of equal masses revolve in circular orbits of radii ${R_1}$ and ${R_2}$ with the same period. Their centripetal forces are in the ratio
  • A${\left( {\frac{{{R_2}}}{{{R_1}}}} \right)^2}$
  • B$\frac{{{R_1}}}{{{R_2}}}$
  • C${\left( {\frac{{{R_1}}}{{{R_2}}}} \right)^2}$
  • D$\sqrt {{R_1}{R_2}} $
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