BRAINCAKEPotential Gradients
The gravitational potential gradient at a point is the change in gravitational potential per metre, ΔV/Δr. Its unit is J kg-1 m-1, which is the same as N kg-1.
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Key terms in this lesson
- Gravitational potential
- The work done per unit mass to move a small test mass from infinity to a point in a gravitational field; it is zero at infinity and negative everywhere else.
More in Gravitational Fields
- Gravitational Potential
- Equipotentials.
- The Potential Gradient.
- Newton's Law of Gravitation.
- Gravitational Field Strength - g.
- Gravitational Potential.
- Area Under a Force vs Distance Graph
- Satellites
All 14 lessons in Gravitational Fields · All AQA A-level Physics topics