physics/chemistry gataluwak

[WwW.lk]

machanla mata podi ganak hada ganna one,mekayi wenna one 2kg withara bara parsalayak gravity ekata wiruddawa udata ussanna one helium walin?kochcharak helium "L" gahanna oneda kiyala thama cal kara ganna one..kata hari puluwada eka karana widiha kiyala denna calculation eka ?thawa wisthara onenam kiyanna...
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[ctooi]

http://science.howstuffworks.com/science-vs-myth/everyday-myths/question185.htm

https://groups.google.com/forum/#!topic/sci.physics/kurXhT09ZaM

 

[madhawavish]

mehema gamu ..........
v=helium balume parimawa
d=helium ganathwaya
p=wathaye ganathwaya
parsale=m
............................
ethakota allehata thiyena barawala= mg+vdg
ihalata bala=vpg
*********************
me ganata wada ihalata thiyena bale wadi weddi udata yanawa.......
ethakota......
mg+vdg=vpg
m+vd=vp
m=vp-vd
=V(p-d)
v=m/(p-d).......................
(oya ganata wada gahana helium wadiweddi parsale uda yanna gannwa)
(Y)