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A uniform rope lies on a table that parts of it lays over. The rope begins to slide when the length of the hanging part is 25% of entire length. The coffecient of friction between rope and table is

(a)0.33 (b)0.25 (c) 0.5 (d)0.2

Ankit Sharma , 12 Years ago
Grade 12th Pass
anser 1 Answers
Chirrag Nangia

Last Activity: 12 Years ago

Let m be mass per unit length and L be the length

force of friction on part kept on table = weight of hanging part

u*m*(3L/4)*g = m*(L/4)*g

u = 0.33

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