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Contents 1 What is a double pendulum? 1.1 chaos 1.2 the period of a double pendulum with a small angle 1.3 Human Double Pendulum?

[edit] What is a double pendulum?

This article states that "a double pendulum is a pendulum with another pendulum attached to its end", with link to pendulum. Looking at "pendulum", I see that it consists of two masses connected by two massless rods. Here, however, pendulum consists of two massive rods. I think, by double pendulum, people usually think about the case with two massless rods and two masses, see most of the references given at the end of the article. Understanding that this case might also be called double pendulum, not even mentioning the more usual meaning is not satisfactory.

Cumi 13:41, 24 March 2006 (UTC)

I agree with the previous poster. The usual "simple" double pendulum is masses at the ends of massless rods, and the figure suggests this. However the derivation here is for something different, i.e. a "compound" double pendulum consisting of rods with mass but with no masses at their ends. It is quite odd. —Preceding unsigned comment added by 129.78.64.102 (talk) 00:46, 3 November 2007 (UTC)

[edit] chaos

wiki readers:

What units are used for angles < θ1, θ2; CHAOTIC MOTION, Double pendulum >

in the x-y graph where: x axis: angle θ1 is plotted for -3 to +3 (left to right) y axis: angle θ2 is plotted for -3 to +3 (top to bottom)

the graph is described as: < Graph of the time for the pendulum to flip over as a < function of initial conditions

thanks for the information!

veritus 16:15, 24 February 2007 (UTC)

[edit] the period of a double pendulum with a small angle

Ok what is the period of a double pendulum with a small angle?

anyone?

hello? —Preceding unsigned comment added by 128.226.162.108 (talk) 18:57, 20 February 2008 (UTC)

[edit] Human Double Pendulum?

Hello, As a dance and movement experiment, I am interested in constructing a human double pendulum - that is, with humans as bobs or masses. I want to hang the first person in a climbing harness by a rope suspended from a truss. Then I want to hang the second person from the first person. Any suggestions?

Heather @ Helium Aerial Dance www.heliummm.com 64.131.241.205 (talk) 17:06, 25 February 2008 (UTC)