Product Type: Energy Transfer: Motion of A Pendulum. For Use With (Application): Used to investigate the motion of a pendulum and the energy transfers that take place as it swings. Includes: Six pendulum stands, six pendulum stand bases, six start-angle protractors, six height markers, six pendulum arms, six metal hooks, six 50cm sticks, six timers, six sets of 8 dot magnets, six binder clips. Class Size: 24 Students.