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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A thin uniform rod of mass and length is hinged at one end to the level floor. Initially it stands vertically and is allowed to fall freely in the vertical plane. The angular velocity of the rod, when its end strikes the floor, is (g is acceleration due to gravity)

Answer: (D)

Solution

Energy conservation: \dfrac{L}{2}\dfrac\dfrac\dfrac{mL^2}{3}$

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Question ID VK-158748