Question

A uniform chain of length L changes partly from a table which is kept in equilibrium by friction. The maximum length that can withstand without slipping is l, then coefficient of friction between the table and the chain is

• A. $\frac { l } { L }$
• B. $\frac { l } { L + l }$
• C. $\frac { l } { L - l }$
• D. $\frac { L } { L + l }$

Answer 1

Answer: (C)

$\frac { l } { L - l }$

Answer 2

$\mu = \frac { \text { Lenght of chain hanging from the table } } { \text { Lenght of chain lying on the table } }$ $= \frac { l } { L - l }$