4. A bar magnet is falling freely under the influence of gravity only, with its north pole pointing downward. Then it passes through a simple metal ring whose normal is oriented vertically. (a) How is the magnet’s motion affected as it approaches the ring? (b) How is the magnet’s motion affected as it leaves the ring? Explain each case with a diagram showing induced currents and their magnetic effects.
4. A bar magnet is falling freely under the influence of gravity only, with its north...
A. The drawing shows a bar magnet falling through a metal ring.
In part a the ring is solid all the way around, but in
part b it has been cut through.
1. Explain why the motion of the magnet in part a is
retarded when the magnet is above the ring and below the ring as
well.
2. Draw any induced currents that appear in the ring.
3. Explain why the motion of the magnet is unaffected by the...
Physics question.
Suppose that a bar magnet falls through a conducting hoop of wire with its north pole facting downward. Three consecutive snapshots of its descent are shown below. For each snapshot, state whether: the magnetic flux through the loop is upward, downward, or zero; the induced current is clockwise, counterclockwise, or zero, from the point of view of an observer looking down from above the loop. Make a qualitative sketch of the induced current versus time (taking counterclockwise as...
If you drop a bar magnet down a tube made of conducting material (like copper or aluminum) something interesting happens: the bar magnet does not simply accelerate all the way down under the influence of gravity. Instead, there are forces that oppose the motion and cause the bar magnet to descend at essentially a constant velocity. Suppose you do this two times: once with the north pole of the magnet facing down and the second time with the north pole...
answer all Q pls
8. A bar magnet is dropped through a loop of copper wire as shown. Recall that ou magnet, magnetic field lines point away from a north pole and toward a south p positive direction of the induced current I in the loop is as shown by the arrows on the loop, the variation of I with time as the bar magnet falls through th by which of the following graphs (the time when the midpoint of...