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MHT CET202020 Oct 2020Morning ShiftPhysicsRotational MotionActual

Three point masses, each of mass 'm' are placed at the corners of an equilateral triangle of side ' ^ . The moment of inertia of the system about an axis along any one side of the triangle is

Options

  1. A1 3 ~m ²
  2. B3 2 ~m ²
  3. C3 4 ~m ²
  4. D~m ²

Correct answer

C. 3 4 ~m ²

Step-by-step solution

O P= ²- ² 4 = 3 2 MOI = m ( 3 2 )²= 3 4 ~m ²

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