According to Newton's law of universal gravitation, if the distance between two objects is doubled, the gravitational force between them becomes:

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A Two times stronger.
B Four times stronger.
C Half as strong.
D One-fourth as strong.

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Answer: D. One-fourth as strong.

Gravitational force F = G m1 m2 / d². Force is inversely proportional to the square of the distance. If d becomes 2d, F becomes F / (2²) = F/4, i.e. one-fourth as strong.

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According to Newton's law of universal gravitation, if the distance between two objects is doubled, the gravitational force between them becomes:

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