Abstract

Theoretical and experimental results are presented for a double conical pendulum rotated at the top end in a circular path of radius r 0. The rotation modes are different from those with r 0 = 0 and depend on whether the two pendulum masses rotate in or out of phase with the upper end and with each other. The results extend those already described in the physics teaching literature for a single conical pendulum, would be suitable as a lecture demonstration or an undergraduate laboratory experiment, and are closely analogous to those for a chain that is rotated at its upper end.

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