APFIVE Minimum Rotational Inertia
A non-uniform dumbbell consists of masses m and 2m at the ends of a massless rod of length L. If the rotational inertia is measured about various axes perpendicular to the rod, at what position along the rod would the rotational inertia be minimum?
A
At the location of mass m
B
At distance 2L/3 from the mass m
C
At the midpoint of the rod
D
At distance L/3 from the mass 2m
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