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JEE Main Physics question

PhysicsLaws of MotionJEE Main

A coin of mass 10 g is placed over a book of length 50 cm. The coin is on the verge of sliding when one end of the book is lifted to 10 cm. The coefficient of static friction between the book and the coin is

Answer: (D)

Solution

The book forms an incline of length 50 cm raised to height 10 cm, so sinθ = 10/50 = 0.2,

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Question ID VK-152970