Newton's law of universal gravitation

Statue of Isaac Newton in the chapel of Trinity College, Cambridge

Newton's universal law of gravitation is a true physical law that describes the attraction between two objects with mass. It is talked about in Isaac Newton's Philosophiae Naturalis Principia Mathematica.[1][2] The law is part of classical mechanics.

The formula is

$F_{g} = G \frac{m_1 m_2}{r^2},$

In this equation:

• "Fg" is the total gravitational force between the two objects.
• "G" is the gravitational constant.
• "m1" is the mass of the first object.
• "m2" is the mass of the second object.
• "r" is the distance between the centre of object a to the centre of object b.

References

1. "Sir Isaac Newton: The Universal Law of Gravitation" (in English). Astronomy 161. Retrieved 2009124.
2. Cox, Brian; Forshaw, Jeff (2011). The Quantum Universe: Everything That Can Happen Does Happen. Allen Lane. p. 14. .