The earth moves around the sun , but sun does not revolve around the earth . Explain .

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Solution

The gravitational force of earth on sun is equal to that of gravitational force of sun on earth.

This gravitational force of sun on earth is used as centripetal force for revolution of earth around sun.

As sun has very large mass, the gravitational force acting on it due to earth is insufficient for revolution of sun around earth. Hence, sun can't revolve around earth.

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