Question
Define gravitational potential and gravitational field intensity. Give their units. Also write the relation between them.
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Answer
Gravitational potential at a point in gravitational field of the body is defined as the amount of work done in bringing a body of unit mass from infinity to that point without acceleration. It has units of J/ kg. Gravitational field intensity is defined as the force experienced by a body of unit mass placed at that point provided the presence of unit mass does not disturb the original gravitational field. It is expressed in N/ kg. $\text{I}=\frac{\text{V}_{\text{p}}}{\text{r}}$
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