A uniform metal chain is placed on a rough table such that …

Physics Friction Static and Limiting Friction Single Correct MCQ

Published on: September 12, 2026

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

$\frac{3}{4}$

$\frac{1}{4}$

$\frac{2}{3}$

$\frac{1}{2}$

Text Solution

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The correct answer is:

$\mu_{s} = \frac{\text{Length of the chain hanging from the table}}{\text{Length of the chain lying on the table}}$

$=\frac{1/3}{1-1/3}=\frac{1/3}{2/3}=\frac{1}{2}$

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