## Catenary

The Catenary is the shape of a perfectly flexible chain suspended by its ends and acted on by gravity. The curve has a U-like shape, superficially similar in appearance to a parabola (though mathematically quite different).

The catenary is the locus of the focus of a parabola rolling along a straight line.

The catenary is the evolute of the tractrix.

Get copyable formulas for Catenary from Differential Geometry Library (MathML, TeX, Mathematica input, Maple input)