Investigating the Physics of a Cube Submerged in Fluid with Momentum

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The discussion centers on the dynamics of a submerged cube on a non-frictionless surface filled with fluid. Key questions include whether the cube experiences friction with the bottom surface, the nature of liquid drag forces, and the effects of buoyancy and viscosity. It is suggested that the cube would experience friction and drag, potentially leading to a terminal velocity before stopping due to friction. The relationship between momentum, drag, and friction is explored, indicating that if the force imparting momentum ceases, the cube would stop. The conversation concludes with an inquiry into the broader implications of fluid dynamics in relation to mechanics.
MisterMumbleX
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I came up with a math research topic dealing with fluid dynamics, but I do not understand fluid dynamics much, so I would like to know what happens in the following situation:
A cube is on the bottom surface of a room. The cube is to be filled with a certain amount of fluid, and the room is completely filled with a certain amount of (not necessarily different) fluid, meaning that the cube is submerged in this fluid since the cube is in the room. The cube is given a certain amount of momentum.

My main questions are these:
will the cube experience friction with the bottom surface (which isn't frictionless) of the room?
will the cube experience a liquid drag force defined in the equation here:
http://en.wikipedia.org/wiki/Drag_equation?
if there was no friction with the bottom surface of the floor, would the drag force bring the cube to a stop (v = 0) or would it bring it to a terminal velocity?
when there is friction (which I assume there is), would the liquid drag force still bring the cube to a terminal velocity, then the cube comes to a stop due to friction, or what?
at the bottom surface of the room, the cube experiences a buoyancy force upward right against gravity right?
how does viscosity and viscosity force come into play here?

The math research question I came up with in case someone wanted to know what it was:
What is the maximum amount of a liquid a cube of a given surface area, on a non-frictionless surface, and given a specific momentum can carry across a certain distance while submerged in a certain liquid?
 
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MisterMumbleX said:
I came up with a math research topic dealing with fluid dynamics, but I do not understand fluid dynamics much, so I would like to know what happens in the following situation:
A cube is on the bottom surface of a room. The cube is to be filled with a certain amount of fluid, and the room is completely filled with a certain amount of (not necessarily different) fluid, meaning that the cube is submerged in this fluid since the cube is in the room. The cube is given a certain amount of momentum.

My main questions are these:
will the cube experience friction with the bottom surface (which isn't frictionless) of the room?
I think it wouldn't be able to rise. Like a fallen submarine.
will the cube experience a liquid drag force defined in the equation here:
http://en.wikipedia.org/wiki/Drag_equation?
The equation may have to be changed. I have to read the derivation.
if there was no friction with the bottom surface of the floor, would the drag force bring the cube to a stop (v = 0) or would it bring it to a terminal velocity?
If the force that imparts momentum is stopped, it'd suddenly reach v=0.
If the force is going on i think it'll reach terminal velocity.
when there is friction (which I assume there is), would the liquid drag force still bring the cube to a terminal velocity, then the cube comes to a stop due to friction, or what?
The continued force on the body would be reduced by a constant amount of frictional force against it.
So. terminal velocity.
at the bottom surface of the room, the cube experiences a buoyancy force upward right against gravity right?
With no liquid under it, it'd be difficult to get a push upwards.
how does viscosity and viscosity force come into play here?
as it does normally? (I know only mechanics. No fluid dynamics.)

The math research question I came up with in case someone wanted to know what it was:
What is the maximum amount of a liquid a cube of a given surface area, on a non-frictionless surface, and given a specific momentum can carry across a certain distance while submerged in a certain liquid?

would depend on densities and masses and forces. Is fluid dynamics mechanics extended?
 
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