this question is based on upthrust probably, upthrust of air.
2006-10-02 20:25:37 · 9 answers · asked by bhagyashree_pani 1 in Science & Mathematics ➔ Physics
its nowhere mentioned that the weighing machine is in air or vacuum then how can u tell
2006-10-05 05:21:19 · update #1
Yes it's upthrust. The cotton has miles more volume as it's not as dense as iron so it displaces a larger mass of air. If the balance reads equal then the cotton is actually heavier.
Best of Luck - Mike
2006-10-02 20:30:36 · answer #1 · answered by Anonymous · 0⤊ 0⤋
all the above are somehow acceptable anseres NUT,
if you use the term KG. you mean mass. the quantity of matter that is the same allover the universe. and 100kg of ironf is the same as 100kg of cotton.
this though is read from a scale.
now you all say that the coton expiriences air upthrust. therefore it is heavier than the reading. . well if you fill a plastic bag with air does it go up? NO!!!
my view is that the iron is actually heavier aqs far as absolute quantity of mass is concernd.
in 100Kg of cotton you measure the air as welltrapped on the huge piles of cotton.
this is atrick in soft butter ice cream etx were theu insert bubbles og air inside to make it softer.
you end up paying for the air in the price of ice cream. (trust me i know about that first hand)
so iron is my choice since the plastic bag will have a volume of air as well => this extra weight is substracted from the cotton mass.
2006-10-02 20:42:50 · answer #2 · answered by Emmanuel P 3 · 0⤊ 0⤋
The cotton is really "heavier". If weighed on a scale under normal atmospheric pressure, the larger volume of the cotton bag will displace more air, which creates a bouyant force equal to the weight of the air displaced. The denser iron will displace much less air because of its low volume. Take the two bags into a vacuum and weigh them, and the cotton will be heavier.
2006-10-02 20:32:44 · answer #3 · answered by gp4rts 7 · 1⤊ 0⤋
If you are talking about kg, then it shall be the mass.
If you are talking about heavier, then it shall be the Force, F = mg.
If both the iron and cotton in the space where there is no gravity on it, both will be the same heavy (F=0) and mass in kg still the same.
If both the iron and cotton on earth, your mass is still the same, 100kg for both, and defintitely cannot measure which one is heavier.
If you are talking about Force; F=mg, then will be cotton because other than 100kg weight mass of cotton, inside contain air which trapped inside.
2006-10-02 20:45:26 · answer #4 · answered by Mr. Logic 3 · 0⤊ 0⤋
Cotton bag is heavier since it has more Volume so it will experience more upthrust.
True weight= Apparent weight+ upthrust
2015-10-12 05:31:33 · answer #5 · answered by ruchika 1 · 0⤊ 0⤋
it is based on upthrust the larger volume of cotton bag gives rise to greater upthrust so actually cotton heavier
2006-10-02 20:36:48 · answer #6 · answered by chaits89 2 · 0⤊ 0⤋
Are you saying a bag of cotton weighs in at100kg?
and a iron weighs in at 100kg ?
but oneis heavier?
if they weigh in at 100kg eact when weight seperately than one is not heavier than the other. if weighed together and they come to 100kg than yes one could be heavier than the other. could be 90 kg of cottorn and 10 kg of iron, or vise vsa.
2006-10-02 20:32:16 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Do you mean to say that both Iron and cottobn are in same bag. If yes, u got the answer. SGR
2006-10-02 20:58:05 · answer #8 · answered by SGraja 4 · 0⤊ 0⤋
it depends on the density of the material. since iron's moleules are far apart
2006-10-03 03:15:06 · answer #9 · answered by Ekta K 2 · 0⤊ 0⤋