Gravitational Fields

A gravitational field is the area around a mass where any other mass will experience a force. We can model a field with field lines or lines of force.

Radial Fields

The field lines end at the centre of a mass and tail back to infinity. We can see that they become more spread out the further from the mass we go.

Uniform Fields

The field lines are parallel in a uniform field. At the surface of the Earth we can assume the field lines are parallel, even thou they are not.