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 shaped and fastened together at one end, 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 inclined from the higher feet to the point (joint). The inclination is quite shallow, perhaps 1 inch at the 'feet'. 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, used to demonstrate the direction of the V-shaped rail's inclination, is included in the photo.

Location: B2-2