Grade 12Mechanics
3 rods each of mass m and lenght l are joined together to form equilateral triangle.find moment of inertia
3 rods each of mass m and lenght l are joined together to form equilateral triangle.find moment of inertia
1 Answer
Arun
Dear student
I=I+I+I
Now
I=(IcM)+md²
=ML²/12+M(L/2√3)²
=ML²/12+ML²/4×3
=ML²/12+ML²/12
=2ML²/12
=ML²/6
=3×ML²/6
=ML²/2
Regards
Arun (AskIITians Forum Expert)
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