2. A roller coaster of mass 500 kg starts its ride from rest at point A. Point A is located at a height of 70 m above the lowest point on the track. The car rolls down the incline and follows the track around a loop of radius 15 m. Ignore friction force. a. How much work is required to bring the cat to point A? b. Calculate the speed of the car at point C. c. On the figure of the car below, draw and label vectors to represent the forces acting on the car it is at point C. d. Calculate the speed of the car at point B. e. On the figure of the car below, draw and label vectors to represent the forces acting on the car it is upside down at point B. f. Now suppose that friction is not negligible. How would friction affect the answers in (a) and (c)?

2. A roller coaster of mass 500 kg starts its ride from rest at point A. Point A is located at a height of 70 m above the lowest point on the track. The car rolls down the incline and follows the track around a loop of radius 15 m. Ignore friction force. a. How much work is required to bring the cat to point A? b. Calculate the speed of the car at point C. c. On the figure of the car below, draw and label vectors to represent the forces acting on the car it is at point C. d. Calculate the speed of the car at point B. e. On the figure of the car below, draw and label vectors to represent the forces acting on the car it is upside down at point B. f. Now suppose that friction is not negligible. How would friction affect the answers in (a) and (c)?

Physics for Scientists and Engineers with Modern Physics

10th Edition

ISBN:9781337553292

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter7: Energy Of A System

Section: Chapter Questions

Problem 30P: A 1 000-kg roller coaster car is initially at the top of a rise, at point . It then moves 135 ft, at...

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