how does buoyant force result from the difference in pressure between the surface of the cylinder in the fluid and its base?I can't imagine this at all.
We also study that the buoyancy is the reaction of the fluid to the object pushing on it
I can't relate all of this together...
*water pushes also on the bottom surface of the object in the downwards direction as well as upward direction :right?so what makes buoyancy?
http://img696.imageshack.us/img696/3654/unled22rg.jpg
(ignore that the tank is full of water)
you would tell me that there's not a downward force at the base of this suspended object,there's only an upward force...so why??