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MHT CET Physics question

PhysicsLaws of MotionMHT CET

A small coin is kept at the rim of a horizontal circular disc which is set into rotation about vertical axis passing through its center. If radius of the disc is 10 cm and , then the angular speed at which the coin will just slip off at

Answer: (B)

Solution

At the point of slipping , so \sqrt{\frac{μ_sg}{r}}\sqrt{\frac{(3/7)(10)}{0.1}}$≈6.5\

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Question ID VK-040658