The pendulum model demonstrates the physics of harmonic motion, where a suspended weight swings back and forth under the force of gravity. In this design, the pendulum’s oscillations are driven and stabilised by a rubber‑band‑powered gear unit, which compensates for lost kinetic energy and keeps the pendulum moving. The mechanism's anchor escapement regulates oscillation frequency by releasing energy in controlled intervals—an essential principle used in mechanical clocks.

Users can experiment with factors that affect oscillation frequency, including the mass of the pendulum bob, its vertical placement, and band tension. These illustrate how precise mechanical adjustments enable accurate timekeeping. The model is rooted in historical studies by Galileo Galilei and later refined for clockmaking by Christiaan Huygens, whose discoveries shaped modern horology.