How Do Non-Magnetic Metals React to Magnetic Fields?

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Non-magnetic metals do not react to static magnetic fields, which is why certain options in the discussion are incorrect. However, when there is relative motion between a magnet and a non-magnetic metal sheet, electromagnetic induction can occur, leading to the generation of eddy currents. This phenomenon explains the interaction despite the metal being non-magnetic. The confusion arises from the relationship between ferromagnetism and electromagnetic induction, as the latter can still affect non-magnetic materials under specific conditions. Understanding eddy currents is key to grasping how non-magnetic metals can exhibit responses in dynamic magnetic fields.
Jahnavi
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Homework Statement



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More than one options may be correct .

Homework Equations

The Attempt at a Solution


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Options a) and c) are correct . But I don't understand how non magnetic metal reacts to the magnetic field .

Is it in some way related to ferromagnetism ? But then either both b) and d) should be correct or both incorrect ?

If it is about ferromagnetism then relative motion between the magnet and sheet should not play any role .

Option d) is about relative motion between magnet and the sheet . I doubt whether it is in some way related to change of flux .
 

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Jahnavi said:
I don't understand how non magnetic metal reacts to the magnetic field .
They don't, which is why the other answers are not correct.
 
phinds said:
They don't, which is why the other answers are not correct.

Option d) is also given to be correct .
 
Jahnavi said:
Option d) is also given to be correct .
It is correct and as you said, it is due to electromagnetic induction.
 
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cnh1995 said:
It is correct and as you said, it is due to the electromagnetic induction.

How ? It is a sheet not a loop .
 
Jahnavi said:
How ? It is a sheet not a loop .
Look up 'eddy currents'.
 
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The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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