Question

Are these set-ups equal?

Magnet A(1) = 20g ceramic magnet
Magnet B(1) = 80G ceramic magnet

Setup - 1: Magnet A and another Magnet A(2 equal magnets in mass + strength)are being attracted by the force of attraction.

Set - up 2:
Magnet B(80G) and another Magnet A(2 NON-equal magnets in mass + strength)are being attracted by the force of attraction.


Is the force of attraction applied in both cases equal?
@Vincent-Lyon.Fr @Mashy

The question is about comparing the total force of attraction in different set-ups.

Answer 1

ok they are not equal .. ! cause you are comparing

A-A vs A-B .. so definitely not equal!

Answer 2

@Mashy Why?
Please explain.

Answer 3

You gave me a general not specific answer :P @Mashy

Answer 4

as i told you before.. force put by A depends on WHAT it is putting force on

in first case A is putting force on A
second case A is putting force on B .. so obviously they ll be different :-/

why don't you get the concept of force fields??? A sets up a field.. then for some particle to experience a force in that field, it depends on the property of that particle..

Answer 5

I'm really struggling with the concept!

Answer 6

@Mashy
What about this statement:
"If you bring a heavier magnet then it means the pole strength is stronger.. and hence you see the q values in the above equations become stronger and thus the force of attraction is stronger.. "

Heaver magnet is B in setup 2, this the pole strength is stronger... And the Q values are stronger thus the force of attraction= stronger?

Is they BY ANY CHANCE making sense?

Answer 7

You know what I'm doing? Thinking about you statement and relating it to setup#2.

Answer 8

Setup#2 will have more force than setup #1.
Thats because... Of B.
Im trying to understand the concept of forces but I'm struggling severely.

Answer 9

@gleem

Answer 10

@jim_thompson5910 @Callisto @completeidiot @ghazi

Answer 11

your assistance is needed!

Answer 12

yes correct.. thats correct i see light finally :D.. the pole strength of B is stronger.. and hence in set up 2 .. the force will be stronger :D..

Answer 13

so remember both the pole strengths come into play!!.. force = product of pole strengths of the interacting magnets!

Answer 14

not equal.. i meant proportional.. !!

Answer 15

otherwise you ll take my word for it and smother me later :D

Answer 16

@Mashy FINALLYYY!!!! ooooowhooo!

Answer 17

yea :D.. remember this is true for ALL FORCE FIELDS!

Answer 18

Thanks mate for all the help...

Answer 19

no problem ;-)

Answer 20

@Vincent-Lyon.Fr YOUR LEFT TO CONVINCE AND SEE THE LIGHT! :P

Answer 21

he ll come and kill you :D..

Answer 22

ooow noo! :$

Answer 23

I've been trying to explain what I ment for a while... But finally you can understand now so yea :P

Answer 24

I'm assuming that the magnets are as strong as they can be.
There are 4 times as many atoms in B as there are in A. Think of these atoms as strong men of equal strength.
If they're trying to pull a huge truck, obviously Team B has a better chance of getting it moving because they pull with 4 times as much force as Team A.
And because the two magnets don't move, Magnet A exerts as much force on Magnet B as B does on A (i.e. four times as much as that in setup 1). This follows directly from Newton's Third law.

Answer 25

Ow forgot to note, magnet B is fixed, while magnet A is free moving.

Answer 26

@rajathsbhat
And that means set up 2 will have almost 2.5 times greater force than set up 1
40G vs 100G = 100G greater force than the first set up.
And yes, newton's third law is applied equally.

Answer 27

So @Vincent-Lyon.Fr I am I making sense here?

Answer 28

I posted this recently on your last edition of this issue.

Lets begin again. One thing that was left uncorrected in the previous discussion is that the pole strength is related to the mass of the magnet it is not... A light magnet can be much stronger than a heavy one. A term which should be eliminated from this discussion is "rate of force" It means nothing to me and I am sure to many others. OK?

You say you have done some experiments with magnet but from reading above you did not use instruments to measure forces but used the feel of the force to gauge its strength which is very subjective. A light strong magnet is indistinguishable from a heavy weak magnet. in fact you cannot determine which one is stronger from their interaction. You can determine which one is stronger using a third magnet to interact with each separately. Do you see that?

To demonstrate the force between the two magnets is the same strength consider the diagram with two different strength and size magnets separated by a rigid non magnetic wall with two identical springs between the wall and each magnet.

. You would find that the compressed length of each spring is the same demonstrating the force on each magnet is the same. The force on A due to B is equal to the force on B due to A. I'll stop here and see what you think.