A cubical vessel of height 1 m is full of water. What is the amount of work done is pumping water out of the vessel? Take g = 10ms–2 


Correct option is

5000 J


Side of the cube l = 1 m. Base area of the cubical vessel = l2. Mass of water contained in a height . Weight of this water . Therefore, work done in pumping out water up to a height x is


Therefore, total work done in pumping out water up to a height l is  





               = 5000 J



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