Magnetic Braking on Aluminum

Magnet motion is noticeably resisted. Ask students to predict what will happen. Slide magnet over/near sheet compared with nonmagnetic object. Key idea: Moving magnetic field induces currents that oppose the motion. Ask: How can aluminum slow a magnet if it isn't magnetic? Safety and cleanup: Teacher handles strong magnets. https://www.google.com/search?q=%22Magnetic+Braking+on+Aluminum%22+science+demonstration+experiment