(Answered) Two wheels with rotational inertias of 10 kg m2 and 15 kg

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Two wheels with rotational inertias of 1.0 kg m^2 and 1.5 kg m^2 are rotating on the same axis at 20 rads and 12 rads respectively, in opposite directions. If the wheels are suddenly coupled together, find the common angular speed of the wheels after being coupled.

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