In the diagram below a 5,929 kg car starts from rest at point A. It then slides down the hill, travels around the loop (the loop's diameter is 56 m). When the car is at point B, it is going the minimum possible speed it could be going without falling. After completing the loop, it compresses a spring 7.7 m. Assume there's no friction present. A B A.) Determine how high point A is above point C. B.) Determine the spring constant. C