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n identical cubes each of amss m an side...

n identical cubes each of amss m an side I are on the horizontal surface. Then the minimum amount of work done to arrange then one on the ther is

A

nmmgl

B

`(mgln^(2))/2`

C

`(mgln(n-1))/2`

D

`(mgln(n+1))/2`

Text Solution

Verified by Experts

The correct Answer is:
C
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