Laws Of Motion Question 369

Question: A uniform metal chain is placed on a rough table such that one end of chain hangs down over the edge of the table. When one-third of its length hangs over the edge, the chain starts sliding. Then, the coefficient of static friction is [Kerala PET 2005]

Options:

A) 34

B) 14

C) 23

D) 12

Show Answer

Answer:

Correct Answer: D

Solution:

μs=Lenghtof the chain hanging from the table Length of the chain lying on the table

=l/3ll/3=l/32l/3=12



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