A Triatomic Molecule Is Oriented as Follows Along the $3 m a ^ { 2 }$

A triatomic molecule is oriented as follows along the x -axis: mass m is at the origin, mass 2 m is at x=a , and, mass 3 m is at x=2 a . What is the moment of inertia of this molecule about the y -axis?

A) $3 m a ^ { 2 }$
B) $14 m a ^ { 2 }$
C) $2 m a ^ { 2 }$
D) $12 m a ^ { 2 }$

Correct Answer:

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