Gravitational potential (AQA A-Level Physics): Quizzes

Work done per unit mass from infinity

Zero

It becomes negative

$V = -\frac{GM}{r}$

$m \Delta V$

Surfaces with same potential everywhere

No work is required

$V \propto \frac{1}{r}$

$g = -\frac{\Delta V}{\Delta r}$

Gravitational potential difference