Pendulum Resonance Push

Small timed pushes build very large swings. Ask students to predict what will happen. Push at matching rhythm vs random rhythm. Key idea: Energy adds efficiently when forcing matches natural frequency. Ask: Why do tiny pushes become a big motion only at the right rhythm? Safety and cleanup: Keep swing area clear. https://www.google.com/search?q=%22Pendulum+Resonance+Push%22+science+demonstration+experiment