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NEET 2008 Physics question

PhysicsLaws of MotionNEET 2008

A roller coaster is designed such that riders experience "weightlessness" as they go round the top of a hill whose radius of curvature is 20 m. The speed of the car at the top of the hill is between

Answer: (2)

Solution

At the top of the hill, the net downward force provides the centripetal force: . Weightlessness means the normal reaction , so . $v =

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Question ID VK-089947