KVPY SA Exam 2016 Question Paper

Question : 66 of 80

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Part-2 PHYSICS

Which one of the following four graphs best depict the variation with x of the moment of inertia I of a uniform triangular lamina about an axis parallel to its base at a distance x from it

Validate

Solution:

\I=\I_\COM+\Mx^2

First it will decrease because x is increasing and axis is coming closer to COM axis. After Passing COM axis, M & I will again increase
⇒ I is minimum about the axis passing through COM if we compare I about other parallel axis

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