APFIVE Rotational Inertia of Point Masses
A system consists of three point masses: 2m at position (0,0), m at (L,0), and 3m at (0,L). What is the rotational inertia of this system about the z-axis passing through the origin?
A
5mL²
B
3mL²
C
4mL²
D
6mL²
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