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"The Snake"

Due 9:00 AM Monday, March 9th, 1998

The figure above shows a piece of flexible wire lying on a frictionless table top. The wire can slide around and change its shape freely, but it cannot move perpendicular to the table.

Part a
If a current were to begin to flow counterclockwise in the wire which of the following would happen?

  1. The wire would tend to stretch out into a circle
  2. The wire would contract down to a tangled mess
  3. Nothing
  4. There is not enough information to tell.
Part b
If the current went clockwise, would that affect your answer to part a?

Don't forget to explain your answer as clearly as possible.



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