The sled and rider have a total mass M and start from rest at A(b, 0). If the sled descends the smooth slope which may be approximated by a parabola, determine the normal force that the ground exerts on the sled at the instant it arrives at point C. Neglect the size of the sled and rider.

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Units Used: kN = 10 N Given: a = 2m b = 10 m M = 80 kg 8 = 9.81 m 2 S c = 5 m B A