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JEE Main 2012 Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main 2012

This question has Statement 1 and Statement 2. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement 1: When moment of inertia I of a body rotating about an axis with angular speed ω increases, its angular momentum L is unchanged but the kinetic energy K increases if there is no torque applied on it. Statement 2: L = Iω, kinetic energy of rotation

Answer: (2)

Solution

Statement 2 gives the correct definitions. With no torque, L is conserved, and $K =

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Question ID VK-103452