Question: A chain of mass m = 0.80 kg and length l = 1.5 m rests on a rough-surfaced table so that one of its ends

A chain of mass m = 0.80 kg and length l = 1.5 m 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 over- hanging part equals η = 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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