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Hi this is from a practice test regarding fluids. There is a belt that is 2/3rds submerged under water with a bunch of balloons sticking on it. Please see attached picture.
Question: What happens to a balloon as it descends into the water at a uniform rate?
answer: is D.
a. volume changes linearly
b. volume doesn't change
c. The volume of the balloon changes a little at first, then gradually more as it descends.
d.The volume of the balloon changes considerably at first, then gradually less as it descends.
can anyone explain why this is so? according to P=rho*g*Depth, shouldn't it be more of a linear relationship? Also why isn't it C? I would think that as the balloon goes deeper and deeper into the water, the combined pressure of the water on top would make the volume change more as it descends
Question: What happens to a balloon as it descends into the water at a uniform rate?
answer: is D.
a. volume changes linearly
b. volume doesn't change
c. The volume of the balloon changes a little at first, then gradually more as it descends.
d.The volume of the balloon changes considerably at first, then gradually less as it descends.
can anyone explain why this is so? according to P=rho*g*Depth, shouldn't it be more of a linear relationship? Also why isn't it C? I would think that as the balloon goes deeper and deeper into the water, the combined pressure of the water on top would make the volume change more as it descends
