How to mass an object that is less dense than air?


by Ralphonsicus
Tags: density, helium, mass, measurement, physics
Ralphonsicus
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#1
Mar8-12, 10:45 AM
P: 47
How does one go about massing an object less dense than air (like a balloon), because gravity can then not be relied on?
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mathman
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#2
Mar8-12, 03:27 PM
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What do mean by "massing"? Note - "mass" is a noun, not a verb.
Drakkith
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#3
Mar8-12, 04:15 PM
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Buoyancy! This page should help: http://hyperphysics.phy-astr.gsu.edu...pbuoy4.html#c2

Just pretend you are weighing the object underwater and the page should work fine. If you want to do the calculations by hand you can find them on wikipedia's page on Buoyancy as well as on the first site linked.

Ralphonsicus
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#4
Mar8-12, 04:36 PM
P: 47

How to mass an object that is less dense than air?


Quote Quote by mathman View Post
What do mean by "massing"? Note - "mass" is a noun, not a verb.
Having trouble understanding? Drakkith seemed to cope just fine.

Quote Quote by Drakkith View Post
Buoyancy! This page should help: http://hyperphysics.phy-astr.gsu.edu...pbuoy4.html#c2

Just pretend you are weighing the object underwater and the page should work fine. If you want to do the calculations by hand you can find them on wikipedia's page on Buoyancy as well as on the first site linked.
Thanks, just what I was looking for.
Drakkith
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#5
Mar8-12, 04:40 PM
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Quote Quote by Ralphonsicus View Post
Having trouble understanding? Drakkith seemed to cope just fine.
It's important to always be clear as to what you are asking.
MrRobotoToo
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#6
Mar8-12, 04:54 PM
P: 20
Place the object on a digital scale inside of a vacuum chamber.


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