Sir i have a question in ur video in order to find whether the object sink or float it depends on comparing the weight / buoyant force ,but in other resources they just compare the density how come ? In the formula of comparing the two forces: Density (solid) × v (solid) ×g / V liquid displaced × density (liquid) ×g So from this we can exclude the gravity, but the volume we can't so why we just comapre the densities at the end ?
Yes, you can think about the floating two different ways, 1) if the density of the object is less than the density of the liquid then the object will float or 2) if the buoyant force from the liquid is greater than the weight of the object then it will float. They are of course related to each other and one can be derived from the other. Does that help?
it was really nice lesson
So nice of you, thanks!
Sir i have a question in ur video in order to find whether the object sink or float it depends on comparing the weight / buoyant force ,but in other resources they just compare the density how come ?
In the formula of comparing the two forces:
Density (solid) × v (solid) ×g / V liquid displaced × density (liquid) ×g
So from this we can exclude the gravity, but the volume we can't so why we just comapre the densities at the end ?
Yes, you can think about the floating two different ways, 1) if the density of the object is less than the density of the liquid then the object will float or 2) if the buoyant force from the liquid is greater than the weight of the object then it will float. They are of course related to each other and one can be derived from the other. Does that help?
@@stepbystepscience yeah yeah I know but just I'm wondering from the formula we only consider the density what about the volume we neglected it
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How exactly would the buoyant force becomes equal to the gravitational force, so that the thing floats
That is how the volume will not be the full volume of the cube? It was an interesting topic loved the video sir 👍
Yes, that is the case, when the object floats the volume will not the the full volume of the object. only the portion that is below the surface.
@@stepbystepscience got it thank you