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When a uniform and flexible chain hangs from two pegs, its weight is uniformly distributed along its length. The shape it takes is called a _________

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When a uniform and flexible chain hangs from two pegs, its weight is uniformly distributed along its length. The shape it takes is called a _________

(a) Catenary

(b) Parabola

(c) Hyperbola

(d) Ellipse

I got this question in class test.

My question comes from Curves Used in Engineering Practice in chapter Lettering Practice, Scales & Curves of Civil Engineering Drawing

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Correct answer is (a) Catenary

Easy explanation: When a uniform and flexible chain hangs from two pegs, its weight is uniformly distributed along its length. The shape it takes is called a catenary. The catenary curve has a U-like shape, superficially similar in appearance to a parabola, but it is not a parabola. The catenary is also called the alysoid, chainette, or, particularly in the materials sciences, funicular. This figure blow represents a catenary and a parabola.

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