The 20-kg wheel has an eccentric mass which places the center of mass G a distance r̅ = 70 mm away from the geometric center O. A constant couple M = 6 N∙ m is applied to the initially stationary wheel, which rolls without slipping along the horizontal surface and enters the curve of radius R = 600 mm. Determine the normal force under the wheel just before it exits the curve at C. The wheel has a rolling radius r = 100 mm and a radius of gyration k_O = 65 mm.

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450 M. v R M G C