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A uniform cable of mass ‘M’ and length ‘L’ is placed on a horizontal surface such that its th n 1 ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ part is hanging below the edge of the surface. To lift the hanging part of the cable upto the surface, the work done should be -

1. nMgL
2. 2 n 2 MgL
3. 2 n MgL 2
4. 2 n MgL

Correct answer: 2 n 2 MgL

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