Rubber vs iron weights

[C Man]

at the gym my grip on the bar is alot wider. and on mine at home is alot more narrow.

I'm amazed that you just now mentioned this and were thinking the weights themselves were somehow a more significant factor.

[XxSetTripp1n]

I personally have not used rubber or rubber coated weights but have had many friends work out with me who use non-iron weights and they all say the same thing and that's the iron weights seem a whole lot heavier. This includes the iron dumbells versus the rubber ones.

see this guy knows what im talking about. ferrum why dont you go try them both then come back and tell me ur experience.

[ironwill2008]

Which is heavier,a pound of feathers or a pound of lead?

Is this a trick question?

[mystix]

how bout some regular iron ones anodized dipped in like red.

[FERRUM_MAXIMUS]

see this guy knows what im talking about. ferrum why dont you go try them both then come back and tell me ur experience.

I have both,the weight is the same,but the balance may differ which may account for the perceived difference.In your case I think it's the difference in grip width which alters arm geometry and therefore leverage,the difference in leverage ratio makes it appear heavier.

[FERRUM_MAXIMUS]

Is this a trick question?

No,what I meant is that even that they weigh the same the difference in size/volume can change the CG(center of gravity) and CB(center of balance),so the weight is the same but the "feel" can be different.

[XxSetTripp1n]

I have both,the weight is the same,but the balance may differ which may account for the perceived difference.In your case I think it's the difference in grip width which alters arm geometry and therefore leverage,the difference in leverage ratio makes it appear heavier.

wow you know alot of the science behind the bench press.

[Dinotrainer]

see this guy knows what im talking about. ferrum why dont you go try them both then come back and tell me ur experience.

Nah, the guys friends are just CONFUSED, that's all. By the way, how much in weight are we talking about here? What's your idea of "feeling" lighter or heavier?

[Dinotrainer]

how bout some regular iron ones anodized dipped in like red.

Everyone knows the red plates are extra heavy.....don't they???

[FERRUM_MAXIMUS]

Everyone knows the red plates are extra heavy.....don't they???

Yep,it's a well known fact that red's the heaviest color. LOL

[kev.sherman]

Anyone know if there are bumper plates in 45lb or 55lb that are an inch or so larger in diameter than a typical steel 45lb'er ?

Would be good like that for the heavy lifts to only need 2 plates on the bar for big lifts where you need to drop um right ?

what I plan to do when I find out

[XxSetTripp1n]

i dont even know what were talking about here anymore. what red plates are we talking about?

[NDJASS1]

The reason why iron weights seem heavier than rubber, is due to the fact that iron is attracted to magnets. Therefore, iron is attracted to the Earth's magnetic field, north and south pole. Iron is therefore 20 - 30% heavier than any other material including rubber.

As far as rubber encased weights are concerned, these will still seem lighter than raw iron weights because there is the rubber barrier in between the iron and the magnetic field.

Pump iron, its original.

[Essexlad]

The reason why iron weights seem heavier than rubber, is due to the fact that iron is attracted to magnets. Therefore, iron is attracted to the Earth's magnetic field, north and south pole. Iron is therefore 20 - 30% heavier than any other material including rubber.

As far as rubber encased weights are concerned, these will still seem lighter than raw iron weights because there is the rubber barrier in between the iron and the magnetic field.

Pump iron, its original.

I hope you're joking.

Otherwise whoever taught you that "science" needs to stop being retarded.

[yankeemarko1]

The reason why iron weights seem heavier than rubber, is due to the fact that iron is attracted to magnets. Therefore, iron is attracted to the Earth's magnetic field, north and south pole. Iron is therefore 20 - 30% heavier than any other material including rubber.

As far as rubber encased weights are concerned, these will still seem lighter than raw iron weights because there is the rubber barrier in between the iron and the magnetic field.

Pump iron, its original.

This is the most hysterical post EVER!!!! Thanks for making my day.

[NDJASS1]

This is the most hysterical post EVER!!!! Thanks for making my day.

its true

[racertomtom]

The reason why iron weights seem heavier than rubber, is due to the fact that iron is attracted to magnets. Therefore, iron is attracted to the Earth's magnetic field, north and south pole. Iron is therefore 20 - 30% heavier than any other material including rubber.

As far as rubber encased weights are concerned, these will still seem lighter than raw iron weights because there is the rubber barrier in between the iron and the magnetic field.

Pump iron, its original.

Even though I've met some engineers that weren't very bright, I'm pretty sure they used the same magnetic field when they marked 45lbs on the iron and rubber plates.

[Essexlad]

its true

No.

No it's not.

[kelt_22]

WOW. just,wow.

[NDJASS1]

Has anyone got any better suggestions then? To me it seems like the only logic one, if you do some research you might surprise yourself? You tell me, why is iron heavier than rubber? And no, its got nothing to do with the mind, thats a load of bull****.

[bigredlemon]

No,what I meant is that even that they weigh the same the difference in size/volume can change the CG(center of gravity) and CB(center of balance),so the weight is the same but the "feel" can be different.

No, it is a trick question. precious metals like gold are often measured by troy weight. One troy pound of lead is 373.24grams. One pound of feathers is 453.59 grams.
http://en.wikipedia.org/wiki/Troy_weight#Troy_pound

Therefore, one pound of feathers are heavier than one pound of lead leader. Tada!

[Essexlad]

Has anyone got any better suggestions then? To me it seems like the only logic one, if you do some research you might surprise yourself? You tell me, why is iron heavier than rubber? And no, its got nothing to do with the mind, thats a load of bull****.

Iron is heavier than rubber because it has a higher density. Not because the Earths weak ass magnetic field is pulling it down. That magnetic field is good for spinning a tiny needle on a (virtually) frictionless fulcrum. It is NO WAY strong enough to make all iron 20-30% heavier. Besides the point that the magnetic flux of the Earths field runs parrallel to the surface at most post points except the poles. So any magnetic force would not be downwards.
An iron atom has a higher atomic mass (52AMU) than any of the constituent atoms of rubber (mainly carbon, 12AMU), and it's lattice has a far greater packing fraction. So it's atoms are heavier, and closer together. Hence it's density is greater, more mass in a smaller volume, put it in a uniform gravitational field and it's heavier than and equivalent volume of rubber!

A 20kg iron plate WILL produce the same force downwards (read weight) as a 20kg rubber coated iron plate. Unless you put them each in different gravitational fields.

There's some logic and science for you.

No,what I meant is that even that they weigh the same the difference in size/volume can change the CG(center of gravity) and CB(center of balance),so the weight is the same but the "feel" can be different.

This guy has already stated the 100% right answer.

[allergic2rice]

The reason why iron weights seem heavier than rubber, is due to the fact that iron is attracted to magnets. Therefore, iron is attracted to the Earth's magnetic field, north and south pole. Iron is therefore 20 - 30% heavier than any other material including rubber.

As far as rubber encased weights are concerned, these will still seem lighter than raw iron weights because there is the rubber barrier in between the iron and the magnetic field.

Pump iron, its original.

lol this is just hilarious.

1st of all this thread is just ridiculous, well at least a lot of the posts in here.
if anyone is proposing that 50 lbs of one material is heavier than 50 lobs of another, you are a retard and retards are not worth arguing with.

[lawlz_xD]

I have never felt any difference between iron and rubber weights, I slap whatever is available on my barbell and call it a day.

[yankeemarko1]

Iron is heavier than rubber because it has a higher density. Not because the Earths weak ass magnetic field is pulling it down. That magnetic field is good for spinning a tiny needle on a (virtually) frictionless fulcrum. It is NO WAY strong enough to make all iron 20-30% heavier. Besides the point that the magnetic flux of the Earths field runs parrallel to the surface at most post points except the poles. So any magnetic force would not be downwards.
An iron atom has a higher atomic mass (52AMU) than any of the constituent atoms of rubber (mainly carbon, 12AMU), and it's lattice has a far greater packing fraction. So it's atoms are heavier, and closer together. Hence it's density is greater, more mass in a smaller volume, put it in a uniform gravitational field and it's heavier than and equivalent volume of rubber!

A 20kg iron plate WILL produce the same force downwards (read weight) as a 20kg rubber coated iron plate. Unless you put them each in different gravitational fields.

There's some logic and science for you.



This guy has already stated the 100% right answer.

Bravo. Nicely stated. I miss Ferrum_Maximus. He also made good posts.

[kelt_22]

Has anyone got any better suggestions then? To me it seems like the only logic one, if you do some research you might surprise yourself? You tell me, why is iron heavier than rubber? And no, its got nothing to do with the mind, thats a load of bull****.

you were serious!?!?
Did your parents have any kids that lived?

[swimmer32]

you were serious!?!?
Did your parents have any kids that lived?

This.

I thought it was a hilarious post until it turned out that he was serious. WTF??

[morderstwo]

No,what I meant is that even that they weigh the same the difference in size/volume can change the CG(center of gravity) and CB(center of balance),so the weight is the same but the "feel" can be different.

rubber coat is all around. ive never seen a lump of rubber stuck to only a small region of an iron plate. centre of mass & balance is still the axis of the bar coat or no coat.

[Essexlad]

rubber coat is all around. ive never seen a lump of rubber stuck to only a small region of an iron plate. centre of mass & balance is still the axis of the bar coat or no coat.

Not all plates have the same mass distribution, and if you hold a plate from the edge (which this discussion was about, picking them up and they feel different weight), then something like a deep dish plate is going to have a different centre of mass from say a rubber coated decagonal plate (works the same on round rubber-plates), which tend not to have a lip at all.

So no, from the vertical plane sliced through the centre of the plate, not all plates will have the same centre of mass. Or thickness for that matter, another thing thats going to alter the perception of weight of the disk.

[morderstwo]

Not all plates have the same mass distribution, and if you hold a plate from the edge (which this discussion was about, picking them up and they feel different weight), then something like a deep dish plate is going to have a different centre of mass from say a rubber coated decagonal plate (works the same on round rubber-plates), which tend not to have a lip at all.

So no, from the vertical plane sliced through the centre of the plate, not all plates will have the same centre of mass. Or thickness for that matter, another thing thats going to alter the perception of weight of the disk.

great, vertical slice of course.


heres another mind fukk:

i put on one 50lb plate on each side of one bar,

then

i put on ten 5lb plates on each side of another bar,

which one weighs more?

this should keep you 2 going for a while.

disclaimers - one side of your body is NOT significantly weaker than the other; & you dont do any exercise that involves spinning the barbell around over your head like a helicopter blade.,