Science Gizmos – Magnetic Accelerator.
Science Gizmos are fun and easy to use. See how to demonstrate the properties, mechanics and applications used and taught in Physics and Chemistry labs.
How does this activity demonstrate the Law of Conservation of energy?
Roll a metal sphere slowly into three spheres resting centrally on a horizontal track with ends touching each other. Watch as the last sphere takes off with increased velocity showing the the system somehow has gained energy!
Materials supplied: 1x Track, 2x wooden blocks, 5x metal spheres (2.0 cm), 1x magnetic metal sphere (2.0 cm). Safety glasses recommended, but not provided.
Note: Track has several different orientations: straight; raised 4.0 cm on either or both ends; and raised 6.0 cm on either or both ends.
[Wikipedia excerpt: ‘…A railgun is a linear motor device, typically designed as a weapon, that uses electromagnetic force to launch high velocity projectiles. The projectile normally does not contain explosives, instead relying on the projectile’s high speed, mass, and kinetic energy to inflict damage. The railgun uses a pair of parallel conductors (rails), along which a sliding armature is accelerated by the electromagnetic effects of a current that flows down one rail, into the armature and then back along the other rail. It is based on principles similar to those of the homopolar motor...….’ ].