The region of space surrounding a body where other bodies will feel an attractive force due to it.

The region of space surrounding a body where other bodies will feel an repulsive force due to it.

The region of space surrounding a charge where other charges will feel an attractive force due to it.

The region of space surrounding a charge where other charges will feel an repulsive force due to it.

to where the gravitational field becomes negligable

to twice the diameter of the mass

infinitely far

to four times the diameter of the mass

G is the gravitational field strength

r is the distance between the 2 masses

F is the repulsive gravitational force

m is the momentum of the mass

uniform far away from the surface and radial close to the surface

uniform close to the surface and radial far away from the surface

the work done in bringing a unit mass from infinity to the point

the work done in bringing a unit mass from the point to infinity

the work done in bringing a unit charge from infinity to the point

the work done in bringing a unit mass from twice the radius of the mass to the point

zero

-0.5MJ

-1.0MJ

-4.0MJ