Ключевые слова: activity, apparatus, chains, demonstration, educational, educational display, educational setup, energy transfer, event, experiment, gathering, glass, harmonic motion, interaction, learning, manual setup, metallic, outdoor, outdoor event, pendulum, pendulum motion, pendulums, people, physical principles, physics, physics demonstration, physics principles, practical demonstration, science, scientific setup, setup, spheres, spherical weights, stick, table, tabletop, tools, wooden, wooden frame,