2006-12-11 06:51:36 · 17 answers · asked by James 1 in Science & Mathematics ➔ Physics
well, why does a helium balloon rise?
because the density of air inside the balloon is lower than the density of the air outside. the air is denser near the surface of the earth coz gravity pulls the air towards it. so as you go higher, the density decreases. this is what the helium balloon does, it rises till the
density inside the balloon = the density outside the balloon.
like all things in nature want an equilibrium, the balloon does too.
so if there's no gravity, the helium balloon would reach a place where the density is equal (inside and outside). that place could be anywhere...... in space........
2006-12-11 07:07:09 · answer #1 · answered by Izela 2 · 0⤊ 1⤋
Gravity is what keeps everything on the ground. If there was no gravity, it would be a moot point about the balloon rising because it would already be floating around without the helium because of the lack of gravity.
2006-12-11 06:55:40 · answer #2 · answered by Darlene G 3 · 0⤊ 0⤋
Gravity is what pushes air to the Earth. So, there is a pressure down to Earth by the air. Air is heavier than helium, so air pushes to the Earth more than helium. This causes helium to push up because of the air pushing to get underneath it.
Without gravity, air would not stay on Earth. It would just dissapate. A helium balloon would drift with it, but it wouldn't necessary float on the air. It would just float without gravity.
2006-12-11 07:01:24 · answer #3 · answered by nondescript 7 · 0⤊ 0⤋
the adaptation in density greater or much less explains why the helium balloon rises. even though it does no longer answer the project of the upward thrust in PE. All which skill is that the balloon has aquired greater skill because of the fact it has moved that plenty greater from the floor. the two are no longer an analogous element, and that they are not appropriate contained in the assumption test which you have conceived, which does no longer advise that it incredibly is a poor concept. in case you have been to place a hollow contained in the balloon so as that all the helium might get away into the ambience, what ever replaced into left might rush at a quicker and ever greater desirable velocity because of the fact the PE replaced into switched over to KE.
2016-10-05 04:33:36 · answer #4 · answered by ? 4 · 0⤊ 0⤋
In zero gravity, no objects have weight relative to each other. A helium balloon would float around just like a brick would.
2006-12-11 06:57:16 · answer #5 · answered by Lorenzo Steed 7 · 1⤊ 0⤋
cool question. It wouldn't rise; it rises in gravity because it is lighter than air, but without gravity, there's no such thing as lighter or heavier, and everything would kind of jostle around together.
2006-12-11 06:55:38 · answer #6 · answered by lee m 5 · 1⤊ 0⤋
No.
It only rises because there is a pressure difference between its top and bottom, and this pressure difference gives a force greater than its weight. No gravity, no pressure difference (and no weight) - it will just stay put.
2006-12-11 07:22:23 · answer #7 · answered by Anonymous · 0⤊ 0⤋
yes because it rise with the force of gravity pulling it down so it would rise faster without that force
2006-12-11 06:55:01 · answer #8 · answered by tiger dolphin 2 · 0⤊ 0⤋
without gravity all the atmosphere would be lost in space, leaving no medium wherein it could float. Moreover, without the atmospheric pressure, the balloon would need to be made of iron lest it would explode, making it very heavy.
2006-12-11 08:18:25 · answer #9 · answered by Anonymous · 0⤊ 0⤋
Without gravity everything would rise and drift away.
2006-12-11 07:06:15 · answer #10 · answered by Anonymous · 0⤊ 0⤋