1.

a) Why is it easier for you to float in saltwater than in freshwater? b) Why is there no horizontal buoyant force on a submerged body? c) Two solid blocks of identical size are submerged in water. One block is iron and the other is aluminium. Upon which is the buoyant force greater? d) A piece of iron when placed on a block of wood, this makes the wood to float lower in the water. If the iron piece is suspended beneath the wood block, would it float at the same depth? Or lower or higher?

Answer»

a) Salt water is denser than freshwater. 

b) Buoyant force is the upward force only. The body is submerged means, its weight is more than the buoyant force. Here there will be no horizontal buoyant force. 

c) Buoyant force on iron block is more than that of aluminium block. 

d) It floats on higher depth than in the first case.



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