A uniform rope lies on a horizontal table so that a part of it hangs over the edge. The rope begins to slide down when the length of the hanging part is $25\%$ of the entire length. The coefficient of friction between the rope and the table is
Medium
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$\frac{3}{4} \mu_{3} m g=\frac{1}{4} m g$
$\therefore \mu_{s}=\frac{1}{3}=0.33$
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