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

[pratyushag]

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?)

 

[Basic_Physics]

Lenz's law

 

[pratyushag]

cant really understand it.. can u explain it?

 

[Gordon1]

Acceleration of a magnet? Interesting question, I would like to hear more.

 

[bsbs]

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?

 

[Basic_Physics]

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.

 

[Gordon1]

Got it thanks. Induced emf, neat.