Rotational modes of a double conical pendulum


 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 are shown to be closely analogous to those for a chain that is rotated at the upper end in a circular path.