Homework Help: physics

Posted by H on Thursday, July 24, 2008 at 11:04am.

There is a bar magnent falling through a metal ring. The first metal ring is solid all the way around but in the second metal ring it has been cut through. Why is the motion in the magnent with the solid metal ring retarded when the magnent is above the ring and below the ring. What induced currents appear in the ring? Why is motion unaffected in the ring in part 2?

physics - drwls, Thursday, July 24, 2008 at 11:11am
In the first case, the changing matgnetic field trhough the ring allows a current to flow in the ring which opposes the change in magnetic field, creating in essence a magnet with reversed polarity to oppose motion of the bar magnet. In the second case (open ring), this does not happen because a ring current cannot flow.
physics - Anonymous, Tuesday, February 7, 2012 at 9:54pm
smd

Answer this Question

Related Questions

physics - Find the electric field strength |E| at point P right above the edge ...
physics - Find the electric field E at point P right above the edge of a metal ...
math - one way to resize a ring is to fill a bar into the ring.suppose a ring ...
Math - one way to resize a ring is to fill a bar into the ring.suppose a ring ...
physics - a metallic ring of radius 'r' and cross sectional area is ...
phyical science - a metal ball is just able to pass through a metal ring .is ...
Physics - If you place a metal ring in a region in which a magnetic field is ...
physics - A circular ring of wire of diameter 0.60 m carries a current of 35A. ...
Physics - A bar magnet with its south pole down passes through a conducting ...
physics - Suppose you cut a small gap in a metal ring (Figure A). If you heat ...

For Further Reading

First Name:
School Subject:
Answer: