We start with procedure 1: a magnet of length L is dropped so the front end is a

Question

We start with procedure 1: a magnet of length L is dropped so the front end is at height H from the coil, and you get a graph with two peaks. Each question changes the procedure, and we wish to compare the height of the peaks on new graph to the height of the peaks in the original graph.

a) Suppose a second identical magnet is placed side by side with the first, with the north pole of each next to the south pole of the other. If the pair of magnets is now dropped from height H, how will the graph compare to the original graph?

b) Now, suppose the two identical magnets are again placed side by side with the first, but now the two north poles are next to each other and the two south poles are next to each other. If the pair of magnets is dropped from height H, how will the graph compare to the original graph?

c) Now, suppose one magnet is held fixed and the coil is dropped from height H, Assume the coil falls so the magnet passes through the center. How will the graph compare to the original graph?

d) Next: suppose the original experiment is done on the Moon, where g, the acceleration due to gravity, is about one-sixth of g on Earth. If the magnet is dropped from height H, how will the graph compare to the original graph?

e) Finally: if you increase the height H, what will happen to the graph?

Explanation / Answer

NOW TO OUR QUESTIONS...

a) both peaks will be nearly zero - it is because the magnetic flux by both of the magnetic will nearly cancel each other as they are placed side by side with opposite poles.

b) both peaks will be more than before - it is because both magnets placed in above fashion will have additive magnetic flux.

c) both peaks will be same as before - it is because keeping magnet fix and moving the coil or vice versa has same quantitative nature of solution.

d) both peaks will be less than before - it is because the acceleration due to gravity on moon is smaller and hence the rate at which magnet falls through the coil is lesser and hence rate of change of magnetic flux is lesser

e)both peaks will be more than before - it is because magnet now falls at greater speed through each face and hencethe rate of change of magnetic flux is more now at both face.

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