A chain is placed on a frictionless table with one-fourth of it hanging over the edge. If the length of the chain is 2 m and its mass is 4 kg, the energy need to be spent to pull it back to the table is

Q: A chain is placed on a frictionless table with one-fourth of it hanging over the edge. If the length of the chain is 2 m and its mass is 4 kg, the energy need to be spent to pull it back to the table is

(a) 32 J

(b) 16 J

(c) 10 J

(d) 2.5 J

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Ans: (d)