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JEE Main Physics question

PhysicsLaws of MotionJEE Main

A wheel making 20 revolutions per second is in a horizontal circle with a uniform angular velocity. Let be the tension in a string tied to a point on it at radius . If the radius is halved and the angular velocity is doubled, the tension in the string will become

Answer: (B)

Solution

. With and : $T' =

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Question ID VK-157709