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The potential gradient.

The potential gradient at a point in a gravitational field is the change in gravitational potential per metre.For a change in distance of Δr the potential changes by an amount of ΔV. The potential gradient is therefore ΔV/Δr.Since ΔV is work done per unit mass i.e. ΔW /m then it follows that

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Specification: Edexcel Physics (9PH0), A-level, Topic 12: Gravitational Fields. Topic: Gravitational Fields.

Key terms in this lesson

rest energy
The energy equivalent of a particle's mass when it is at rest, given by E equals mc squared.

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