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Grade: 12th Pass
        

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

7 years ago

Answers : (1)

Chirrag Nangia
32 Points
							

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

7 years ago
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