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A billiard ball of mass 163 g and radius 3.0 cm starts with a translational speed of 2 m/s at point A on the track as shown in the figure below. If point B is at the top of a hill that has a radius of curvature of 79 cm, what is the normal force acting on the ball at point B? Assume the billiard ball rolls without slipping on the track.

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