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Question

The figure shows an isosceles triangular plate of mass M and base L. The angle at the apex is 90°. The apex lies at the origin and the base is parallel to X–axis

The moment of inertia of the plate about the y-axis is

  1. fraction numerator M L to the power of 2 end exponent over denominator 6 end fraction    
  2. fraction numerator M L to the power of 2 end exponent over denominator 8 end fraction    
  3. fraction numerator M L to the power of 2 end exponent over denominator 24 end fraction    
  4. none of these    

The correct answer is: fraction numerator M L to the power of 2 end exponent over denominator 24 end fraction

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