# Buoyancy of an object at the bottom of a tank?

I am suddenly curious: Would a cube placed at the bottom of a tank filled with fluid ($\rho_{\textrm{fluid}}>\rho_{\textrm{object}}$) float?

As far as I know, an object floats if the difference of the force exerted by the fluid at the top/bottom of the object is greater than the gravitational pull. So I think that there would be no buoyancy if there is no pressure to push the object up. Of course it is an ideal situation, but would it be possible for an object to stay at the bottom in this case?

• A heavy object can be attached to a ceiling with a suction cup, so why not a light object attached to the tank floor likewise? – Whit3rd Jun 18 '17 at 6:40
• Wow, thinking of it that way, it is way easier to understand! – Jihyung Kang Jun 18 '17 at 8:53