In the Bottle Balance Beam Demonstration Kit for physical science and physics, the water bottle and wooden board seem to defy gravity. An attention-getting and memorable demonstration of the concept of the center of gravity.
This balancing act will be a real attention getter! Students will remember the concept of the center of gravity involved in this demonstration. A large water-filled bottle and a wooden board seem to defy gravity as together they balance on the board's edge. You have to see it to believe it! The kit includes the pre-cut balancing board, 2-L bottle, and complete instructions. An innovative density demonstration can also be performed using blue kerosene and mineral oil, not included.