Forest UCM Energy CentralForce

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A central force is defined as a force depends only on separation distance

[math]\vec{F} = f(\vec r) \hat r[/math]

ie

Coulomb force and gravitation force.

Spherical Coordinates

Forest UCM SphericalCoordUnitVec.png

Forest_UCM_NLM_Ch1_CoordSys#Spherical

Gradient in spherical coordinates

Forest_UCM_Energy#Central_Forces