Three identical bodies of equal mass $M$ each are moving along a circle of radius $R$ under the action of their mutual gravitational attraction. The speed of each body is
Three identical bodies of equal mass $M$ each are moving along a circle of radius $R$ under the action of their mutual gravitational attraction. The speed of each body is
- A
$\sqrt {\frac{{GM}}{R}} $
- B
$\sqrt {\frac{{GM}}{3R}} $
- C
$\sqrt {\frac{{GM}}{{\sqrt 3 R}}} $
- D
$\sqrt {\frac{{GM}}{{\sqrt 2 R}}} $
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