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I understand that the initial angular momentum along the y- axis is zero. Thus we expect the final angular momentum of the system along the y- axis to be zero as well. So the person + platform will spin finally in the opposite direction of the spinning wheel.

But the problem I am having is with the initial x - component of angular momentum. How do we account for a final x- component of angular momentum? If there is no final angular momentum in the x- direction, then this means that angular momentum is not conserved! contradiction! Any help would be appreciated. Thanks.