Recent content by refracted

Thanks for the accurate explanation! I think I got this now. :)

Could it be then that the reaction for buoyancy also distributes evenly along the water of the bridge and the canal, meaning the bridge actually faces little to no additional load? The thing is that while the buoyancy is still there (to keep the ship floating), the additional force, that the...

1. The sphere which was submerged in the water would cause the scale to turn towards the other sphere which was submerged in ethanol. This is because the water-submerged sphere feels a greater buoyancy. 2. I was just describing why the ship floats in general. :) Please check the rest of...

Thanks for the clarification. 1. The scale would turn down towards the bucket of water. Because water is denser than ethanol, the extra density adds to the hydrostatic pressure increase or counter upthrust caused by the spheres when they displace the same amount of liquid. 2. Yes. To make the...

Thanks a lot for the in-depth reply and the link. I still have a question. Would the case be exactly the same if we were using two different scales to weigh the object instead of using one single balance scale?

Yes, there was no problem for me to understand that. :) I didn't mean to put it that way, though, I just couldn't get the thing about hydrostatic pressure into my head. So, hydrostatic pressure depends solely on the height of the water column, but the actual "hydrostatic force" (downforce...

But doesn't the increased total weight of the system essentially come from the counter-upthrust when you put your finger in the cup? (so that total weight = G + counter upthrust) Putting your finger in the cup does increase the hydrostatic pressure of the water, but shouldn't it only increase...

Yeah that's what I thought. As it did sound very absurd to me. I guess the final part of that article was wrong, after all. Thanks!

http://www.thenakedscientists.com/HTML/content/kitchenscience/exp/weighing-buoyancy/So I was wondering if both the scales would show the same weight value? (the scales are marked black in the picture) The object on the left is a pyramid and the object on the right is a cube. They are both...