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A cart with a rider starts rolling from rest at the top of a hill of height h1 = 26.5 m as shown below. The combined mass of the rider and m = 165 kg.

a. How fast is the cart moving when it reaches the top of the second hill of height h2 = 21.50 m?

b. What is the normal force on the cart and rider at the top of this second hill if the second hill has a radius of Curvature of R = 10.5 m?

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