Physics · Rotational Motion
ABC is a uniform plane lamina in the shape of an equilateral triangle. D and E are the mid-points of AB and AC respectively, and G is the centroid of the lamina. The moment of inertia of the lamina about an axis passing through G and perpendicular to the plane ABC is I0. If the triangular part ADE is removed, the moment of inertia of the remaining part about the same axis is NI016, where N is an integer. The value of N is:
- 19
- 215
- 312
- 411✓
Correct answer
11
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