1J20.70 Double Cone

1J20.70 Double Cone

As a double cone moves up an set of inclined rails, its center of gravity lowers.

In this delightful demo, a double cone slides up an inclined rail apparently against the pull of gravity. Two lengths of wood with a square cross-section have been fastened together at the right with legs spreading to the left, forming a "V" shape. The two free legs (tips of the "V") are propped on a narrow wooden crossbar, so that the entire apparatus is slightly inclined upward from point at the right to the feet at the left. The double cone appears in front of this apparatus. The double cone is a single piece of metal that can best be described as two cones set mouth to mouth to create a symmetric diamond-shaped double cone. A narrow needle of metal extends from the tip of each cone, extending the double cone's total length. A plastic rod is included in the photo.

Location: B2-2