State two applications of universal law of gravitation. What happens to the gravitational force between two objects when the distance between them is
(i) Doubled?
​(ii) Halved?
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Explanation:
The two applications of universal law of gravitation are: (i) Universal law of gravitation is used to determine the masses of the sun, the earth and the moon accurately. (ii) Universal law of gravitation helps in discovering new stars and planets
(ii) F is inversely proportional to the square of the distances between the objects. If the distance is doubled, then the gravitational force becomes one-fourth of its original value. ... If the masses of both the objects are doubled, then the gravitational force becomes four times the original value.
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