Q.  A chain of mass m = 0.80 kg and length I = 1.5m rests on a rough-surfaced  table so that one of its ends hangs over the edge. The chain starts sliding off the table all by itself provided the overhanging part equals 𝔶  = 1/3  of the chain length. What will be the total work  performed by the friction forces acting on the chain by the moment it slides completely off the table? 

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   Kindly refer to the link for similar query.
https://www.meritnation.com/ask-answer/question/one-fourth-chain-is-hanging-down-from-a-table-work-done-to/work-energy-and-power/8251679
 
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