rotational-motion

Question: Three point masses ${{m}_{1}},\,{{m}_{2}},\,{{m}_{3}}$are located at the vertices of an equilateral triangle of length $'a'$. The moment of inertia of the system about an axis along the altitude of the triangle passing through ${{m}_{1}}$ is

1) $({{m}_{2}}+{{m}_{3}})\frac{{{a}^{2}}}{4}$

2) $({{m}_{1}}+{{m}_{2}}+{{m}_{3}}){{a}^{2}}$

3) $({{m}_{1}}+{{m}_{2}})\frac{{{a}^{2}}}{2}$

4) $({{m}_{2}}+{{m}_{3}}){{a}^{2}}$

Solution:

Explanation: No Explanation

moment of inertia

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