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 overhanging part equals eta = (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 ?

A chain of mass m = 0.80 kg and length l = 1.5 m rests on a rough-surf

1.	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 overhanging part equals eta = (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 ?
Answer» ANSWER :`-1.3` J