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Figure a hollow cube of side   and volume . There is a small chamber of volume  in the cube as shown. The chamber is completely filled by  kg of water. Water leaks through a hole  and spreads in the whole cube. Then the work done by gravity in this process assuming that the complete water finally lies at the bottom of the cube is

a)

b)

c)

d)



Question ID - 100414 | SaraNextGen Top Answer

Figure a hollow cube of side   and volume . There is a small chamber of volume  in the cube as shown. The chamber is completely filled by  kg of water. Water leaks through a hole  and spreads in the whole cube. Then the work done by gravity in this process assuming that the complete water finally lies at the bottom of the cube is

a)

b)

c)

d)

1 Answer
127 votes
Answer Key / Explanation : (c) -

(c)

Let  be the height of water surface. Then,

CM gets lowered by

Work  done by gravity

127 votes


127