A 800-kg roller coaster car is initially at the top of a rise, at point A. It th

Question

A 800-kg roller coaster car is initially at the top of a rise, at point A. It then moves 145 ft, at an angle of 40. 0 degree below the horizontal, to a lower point B. Choose the car at point B to be the zero configuration for gravitational potential energy of the roller coaster-Earth system. Find the potential energy of the system when the car is at points A and B, and the change in potential energy as the coaster moves between these points. at point A at point B change in potential energy Repeat part (a), setting the zero configuration with the car at point A at point A at point B change in potential energy

Explanation / Answer

a)At point A=mgh=mgdSin=2.23*105J

At point B=0.

Change in potential energy=0-2.23*105J=-2.23*105J

b)At point A=0J

At point B=mgh=-2.23*105J

Change in potential energy=-2.23*105J-0=-2.23*105J

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.