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A chain lies on a rough horizontal table. It starts sliding when one-fourth of its length hangs over the edge of the table. The coefficient of static friction between the chain and the surface of the table is

a
1/2
b
1/3
c
1/4
d
1/5

detailed solution

Correct option is B

Weight of the hanging part is equal to the frictional force on the table. mg4=34μmgμ=13

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A chain lies on a rough horizontal table. It starts sliding when one-fourth of its length hangs over the edge of the table. The coefficient of static friction between the chain and the surface of the table is


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