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MHT CET Physics question

PhysicsSystems of Particles and Rotational MotionMHT CET

Three point masses, each of mass 'm' are placed at the corners of an equilateral triangle of side 'l'. The moment of inertia of the system about an axis along any one side of the triangle is [MHT-CET 2021, MHT-CET 2021]

Answer: (D)

Solution

Two masses lie on the axis (zero contribution) and the third is at distance , so

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Question ID VK-040934