a block of ice with an area A and a height h floats in water of density rho. what work should be performed to submerge the ice block completely into water if density of ice is rho1?
any hints?

Question

a block of ice with an area A and a height h floats in water of density rho. what work should be performed to submerge the ice block completely into water if density of ice is rho1? 
any hints?

anonymous · Answer

Yea.. find out how much of the ice is floating about the water.. you can easily derive that expression.. !! once you know that , its easy!

yrelhan4 · Answer

yeah. i got it already. :P 
thank you for replying.

anonymous · Answer

your welcome :P

yrelhan4 · Answer

one thing to be careful about in this is the force is linearly varying with how much height is above the water. so we have to integrate it. so i was missing a '2' in the denominator.

anonymous · Answer

oooO... i missed that part.. yea.. its a variable force :D

yrelhan4 · Answer

hmm.