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  3. An iron chain of length and mass m is placed on a frictionless table with 1/nth part hanging over the table, the work done by the gravity on the hangi

. An iron chain of length and mass m is placed on a frictionless table with 1/nth part hanging over the table, the work done by the gravity on the hangi

An iron chain of length and mass m is placed on a frictionless table with 1/nth part hanging over the table, the work done by the gravity on the hanging part is

(A) mg

(B) mg/2

(C) mg/2n2

(D) mg/2n4

 

Best Answer

Ans-(C) mg/2n2

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