A 1 000-kg roller coaster car is initially at the top of arise, at point A. It then
Chapter 7, Problem 40(choose chapter or problem)
A 1 000-kg roller coaster car is initially at the top of arise, at point A. It then moves 135 ft, at an angle of 40.08below the horizontal, to a lower point B. (a) Choosethe car at point B to be the zero configuration forgravitational potential energy of the roller coasterEarth system. Find the potential energy of the systemwhen the car is at points A and B, and the changein potential energy as the car moves between thesepoints. (b) Repeat part (a), setting the zero configurationwith the car at point A.
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