# What force acts on the earth perpendicular to the force of the sun which causes the tangential accelerations characteristic of an ellipse?

Jan 31, 2016

$\frac{G M m}{r} ^ 2 = \frac{m {v}^{2}}{r}$
Where $G$ is the gravitational constant, $M$ is the mass of the Sun, $m$ is the mass of the Earth and $r$ is the distance between the Sun and the Earth.