What is the acceleration of a magnet when dropped towards a copper loop?

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Homework Help Overview

The discussion revolves around the acceleration of a magnet when it is dropped towards a copper loop, exploring the effects of electromagnetic induction and Lenz's law.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the concept that the magnet's acceleration will be less than gravitational acceleration due to the interaction with the copper loop. Questions arise regarding the nature of copper as a conductive material and its role in opposing the magnetic field. Some participants seek clarification on Lenz's law and its implications for the situation.

Discussion Status

The discussion is active, with participants sharing insights about Lenz's law and the concept of induced emf. There is a mix of understanding and requests for further explanation, indicating an ongoing exploration of the topic.

Contextual Notes

Participants are considering the properties of copper and its lack of magnetic attraction, while also discussing the implications of induced currents and opposing magnetic fields in the context of the problem.

pratyushag
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Homework Statement


A magnet is dropped towards a loop of copper .the acceleration of magnet will be ?



Homework Equations





The Attempt at a Solution



less than g ,because copper will oppose the relevant pole(im not sure why?)
 
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Lenz's law
 
cant really understand it.. can u explain it?
 
Acceleration of a magnet? Interesting question, I would like to hear more.
 
pratyushag said:

Homework Statement


because copper will oppose the relevant pole(im not sure why?)

what do you know about copper?

it is conductive and non-magnetic material.

if it has no magnetic attraction , then what is the force that acts on the magnet ?

this is when the LENZ's law comes in,

for your case , magnetic fields dropped through the copper loop (conductor) and induces electrical current, current in the conductor then generates an opposing magnetic field that causes "less than g" :-)

do you know what is eddy current?
 
Last edited:
The changing magnetic flux will produce and emf in it. This will produce a current in the loop. Lenz's law state that the direction of the current will be such that the magnetic field that it produces will oppose the original magnetic flux that induced the emf.
 
Got it thanks. Induced emf, neat.
 

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