Question

Does gravitational force get weaker with distance? How strong is gravitational force?

Answer 1

Yes it get weaker because it depends upon the inverse of the square of the distance (or separation).

Explanation:

The gravitational force between two objects of mass `m_1` and `m_2` separated by a distance `r` is given as:

`F_("grav")=G(m_1*m_2)/r^2`

Where `G` is the Universal Gravitational Constant`=6.67xx10^-11 (Nm^2)/(kg^2)`