Upthrust in a fully submerged object

[Himal kharel]

When we put any object in a fluid it experiences upthrust. Suppose an iron cube is put in a beaker with water. It sinks and reaches bottom. When it reaches bottom and touches the base of beaker there is no water below it. Then will it experience upthrust?

 

[Naty1]

The block experiences a buoyant force equal to the weight of the volume of water displaced...After it sinks to the bottom,because the weight imparted by gravity exceeds the buoyant force, the beaker then exerts an additional force sufficient to keep the block in equilibrium...

 

[Himal kharel]

There is no water below cube. So pressure is exerted on all sides except bottom.
Is my assertion right?

 

[obafgkmrns]

If the cube is stationary, its bottom will experience a force equal to the weight of the cube plus the weight of the water in the column above the cube. (Plus the weight of the air in that column extended to the edge of the atmosphere, if we want to be persnickity.) If there is truly no water beneath the cube, that force will be exerted by the bottom of the beaker. If there is some water beneath the cube, the force will be distributed between the beaker and the water.

 

[pmacias]

Yes, the iron cube will still experience upthrust even when it reaches the bottom of the beaker. Upthrust is a force that acts on any object that is submerged in a fluid, regardless of its position within the fluid. This is because the fluid exerts pressure on all sides of the object, including the bottom, causing an upward force known as upthrust. Therefore, even when the iron cube has reached the bottom of the beaker and there is no water below it, it will still experience upthrust due to the pressure exerted by the water surrounding it.