3A70.31 Spring Coupled Triple Pendula

Description: This demonstration shows the effects of three oscillating pendula connected by springs.

The three normal mode oscillations are shown below, Periods of the normal modes are 2𝜋√𝑔/𝑙 , 2𝜋√𝑔/𝑙 + 𝑘/𝑚, and 2𝜋√𝑔/𝑙 + 3𝑘/𝑚 respectively, where 𝑘 is the spring constant.

For information on the relation between triple spring coupled pendula and the flavor states of neutrinos: https://qmplus.qmul.ac.uk/pluginfile.php/1211583/mod_resource/content/1/Neutrino%20Oscillations%20Pendulum%20Guide.pdf