physics question

[Jackal1]

Originally posted by Bluedog
Seeing you use aluminium and iron as an example, would the pull of the Earth's magnetic field play a part in this at all?

  Yea, that`s what I was wondering.

[JB88]

you are all wrong.

everyone knows that cats are made of iron.

duh.

[DoctorYO]

The Iron hits first becuase it has more weight than the aluminum..   Weight being the gravitational force on any given object.

Look at your periodic chart:

Iron (Fe) is number 26

Aluminum (Al) is number 13...

More atomic mass =  more weight when a constant gravitational force is applied (earth gravity)

given equal diminsions of the bars the iron is heavier than aluminum and hence the heavier object will shift the center of gravity of the two bars together with the iron falling first.. (given enough distance to complete its rotation)

Note this is "not" (typo edited for scholz sorry bub) in a perfect enviroment such as a vacuum with out any wind/air resistance but could be mimiced in a non vacuum enviroment with similiar results as long as the outside stimulii was equally applied to both bars..

while the magnetic force will have effect on both the iron and the aluminum the force is not  powerful enough to interfere with the forces of gravity on planet earth in this scenario..


DoctorYo

[Otto]

Is it an African or European bar..?

[DoctorYO]

both objects are together...  if you read his initial description of his experiment you would see that..

He already stated :

f you taka bar of iron and a bar of aluminium and drop them, they will strike the ground at the same time.

DoctorYo

if your going to rebuttal me at least read first..  Read the chess suggestion where T0J0 tells me yahoo is for beginers and I already stated a more advanced place to play in a un edited message..  read people read..  it helps..

[AWMac]

It's not a question of where 'e grips it!  It's a simple question of
weight ratios! A Aluminum bar could *not* carry a Iron bar!

[AWMac]

Listen.  In order to maintain air-speed velocity, a Aluminum bar needs to vibrate forty-three times every second, right?


Please...


Am I right?
 

But then of course, Aluminum/Iron bars are non-migratory.


Oh yeah...


 

[JB88]

lololololol

[ROC]

Helium Ballons fall?

[storch]

the earth's most powerful vacuum is in between GS's ears just south of his nose, so I'll grant him the expertise on this one.  

[mosca]

OK, what if the bars were really strings, like  really really long, thin, elongated bars? What if you had an aluminum string say, 6 miles long, and an iron string, 6 miles long, about the thickness of strong thread? And, you tied the strings together. What then. Would it be different if you tied them at the ends? What about if you tied them so that they formed a circle? Would it then make a difference if you dropped them flat, like a pancake, or would you want to drop them on the edge, like a tire?



Tom

[dedalos]

Originally posted by vorticon

if you taka bar of iron and a bar of aluminium and drop them, they will strike the ground at the same time.  

Ah, no they wont.  You guys are saing that air resistance will cuse the iron bar to hit the grouwnd first if they are attached but magicaly the air resistance does not exist when the bars are not attached?

What ever the material.  The heavier bar will hit first.

[vorticon]

Originally posted by dedalos
Ah, no they wont.  You guys are saing that air resistance will cuse the iron bar to hit the grouwnd first if they are attached but magicaly the air resistance does not exist when the bars are not attached?
 

thats exactly what was causing my confusion.

[SunTracker]

Heavier objects fall faster than lighter ones (assuming everything else is equal) on Earth.

[APDrone]

Originally posted by SunTracker
Heavier objects fall faster than lighter ones (assuming everything else is equal) on Earth.

Sorry, can't resist..

http://www.nasaexplores.com/show_912_student_st.php?id=040908101213