Newton's law of gravitation

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There is a force of attraction between any two massive particles in the universe. For any two point masses m1 and m2, separated by a distance d, the force of attraction F is given by F = m1m2G/d2, where G is the gravitational constant. Real bodies having spherical symmetry act as point masses positioned at their centres of mass.

Subjects: Astronomy and Astrophysics — Physics.

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