Gujarati
Hindi
4-2.Friction
medium

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

A

$0.25$

B

$0.75$

C

$0.33$

D

$0.67$

Solution

$\frac{3}{4} \mu_{3} m g=\frac{1}{4} m g$

$\therefore \mu_{s}=\frac{1}{3}=0.33$

Standard 11
Physics

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