Magnetic towing system / 磁石を使った牽引機構

The "horse and carrot" model I showed recently. I replaced the carrot with rotating magnets. It's a system where a towing vehicle, without a motor or battery, pulls a cart.

先日の馬とにんじん。にんじんの代わりに回る磁石を与えてみた。モーターもバッテリーも持たない牽引車が荷車を引っ張るしくみね。