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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

Four solid spheres, each of diameter cm and mass 0.5 kg, are placed with their centres at the corners of a square of side 4 cm. The moment of inertia of the system about the diagonal of the square is kg m. Find .

Answer: 9

Solution

Radius cm. For the two spheres whose centres lie ON the diagonal, kg m each (total ). For the two spheres OFF the diagonal,

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Question ID VK-158845