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A uniform chain of length 2 m is kept on...

A uniform chain of length 2 m is kept on a table such that a length of 60 cm hangs freely from the edge of the tale. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on to the tabl? `(g=10m//s^(2))`

A

7.2 j

B

3.6 j

C

120 j

D

1200 j

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The correct Answer is:
B
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