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Newtons law of gravitation

Every particle of matter in the universe affects every other particle with a force that is directly proportional to the product of the masses of the particles and inversely proportional to the square of the distance between them.

$$F_g = G \frac{m_1m2}{r^2}$$

• $m_1$ is the mass of the first object

• $m_2$ is the mass of the second object

• $G=6.674 \times 10^{-11}$ is the gravitational constant

The gravitational force between familiar objects (car, dog) is small, it grows as objects get heavier.

Jensens inequality $l_1$ regularization