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  3. Physics
  4. If the mass of earth were 2 times the present mass, the mass of the moon were half the present mass and the moon were revolving round the earth at the same present distance, the time period of revoltion of the moon would be

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Q. If the mass of earth were 2 times the present mass, the mass of the moon were half the present mass and the moon were revolving round the earth at the same present distance, the time period of revoltion of the moon would be

Gravitation

Solution:

$T \alpha \sqrt{\frac{r^3}{M}}$