Gravitational Fields

ggs. Just ggs

What is weight?

force an object experiences due to gravity near the surface of a planet (or moon)

What is gravitational force?

The attractive force between all masses

What is a point mass

acts as if all its mass is concentrated at the centre of the sphere.

When can we assume an object behaves like a point mass?

If a mass is spherical and has uniform density

What is a Gravitational Field?

A region in which a mass experiences a non-contact force.

What is a source mass?

the mass which produces the gravitational field we are interested in.

What is a test mass?

a very small mass with a negligible gravitational field.