A very smooth wooden block is pressed against the bottom of a container of water so that no water remains under the block.will this block rise to the surface when it is released? Why?
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The smooth wooden block logically wont rise to the surface.
1) The block logically wont rise to the surface because, for a block to be lifted up we need buoyant force.
2)This buoyant force acts against the weight of the block and this helps it to rise. 3) But for the buoyant force to be available we need fluid to be present below the surface of the block. So, it wont rise.
4) But physically this condition is very hard to achieve as the pressure force of water will force the water below the block and it may float.
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