Three point masses m 1 , m 2 and m 3 are located at the vertices of an equilateral…
Physics · JEE Main · NTA Exams — Rotational Motion
Three point masses m1, m2 and m3 are located at the vertices of an equilateral triangle of side ‘a’. What is the moment of inertia of the system about an axis along the altitude of the triangle passing through m1?
- \(\left(m_{1}+m_{2}\right) \frac{a^{2}}{4}\)
- \(\left(m_{2}+m_{3}\right) \frac{a^{2}}{4}\)
- \(\left(m_{1}+m_{3}\right) \frac{a^{2}}{4}\)
- \(\left(m_{1}+m_{2}+m_{3}\right) \frac{a^{2}}{4}\)
Answer
(B) (m_ 2 +m_ 3 ) a^ 2 4
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