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## Main Question or Discussion Point

Most introductory physics text books derive the following formula for the gravitational field for a point mass on the on

[itex]g_{x}[/itex] = -[itex]\frac{Gmx}{(x^2 + a^2)^{1.5} } [/itex]

where,

m = total mass of ring

x = distance from point mass to ring center

a = radius of ring

Is there a more general treatment for this ring when the point mass is not on the axis?

**the axis of the ring**:[itex]g_{x}[/itex] = -[itex]\frac{Gmx}{(x^2 + a^2)^{1.5} } [/itex]

where,

m = total mass of ring

x = distance from point mass to ring center

a = radius of ring

Is there a more general treatment for this ring when the point mass is not on the axis?