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Rank the following wheels, which all have a rotational inertia of 0.4mr2 from easiest to rotate to hardest to rotate: a 20 kg blue wheel with a 0.5 m radius, a 40 kg red wheel with a 0.25 m radius, a 10 kg green wheel with a 0.5 m radius.
- green, blue, red
- red = green, blue
- green, blue = red
- red, blue, green
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