Ruler Guitar Pitch

Shorter lengths vibrate faster and sound higher. Ask students to predict what will happen. Hold different lengths of ruler over the edge and pluck. Key idea: Vibration frequency determines pitch. Ask: What changes when less ruler sticks out? Safety and cleanup: Use flexible plastic ruler. https://www.google.com/search?q=%22Ruler%20Guitar%20Pitch%22%20science%20demonstration%20experiment