Part 4. The Ring Launcher

This portion of the lab is typically done hands-on, but because we are limited in our choice of hands-on experiments right now, please watch use this URL: https://www.youtube.com/watch?v=GOSTOcyhcFM (also available as an external link on Canvas). The URL takes to a video by James Lincoln, in which he essentially recreates our laboratory experiment, almost exactly.

10) Use the ring launcher to launch several rings.

11) Why does the ring launcher NOT launch the ring with a slit in it?

12) Describe the difference between launching a copper ring and an aluminum/steel ring.

13) Describe what happens if the light bulb assembly is used instead of a ring. Why does it happen?

14) The following are top views of the copper ring in the iron core. The diagrams assume the copper ring is a single loop of wire. Magnetic field that is described for each case is in the iron core. For each of the four drawings, draw the direction (CW or CCW) of the induced current in the ring. Also indicate the direction of the magnetic field produced by this induced current.