30. A1 000-kg roller coaster car is initially at the top of a rise, at point . It then moves 135 ft, at an angle of 40.0° below the horizontal, to a lower point . (a) Choose the car at point@ to be the zero configuration for gravitational potential energy of the roller coaster-Earth system. Find the poten- tial energy of the system when the car is at points and O, and the change in potential energy as the car moves between these points. (b) Repeat part (a), setting the zero configuration with the car at point @.

30. A1 000-kg roller coaster car is initially at the top of a rise, at point . It then moves 135 ft, at an angle of 40.0° below the horizontal, to a lower point . (a) Choose the car at point@ to be the zero configuration for gravitational potential energy of the roller coaster-Earth system. Find the poten- tial energy of the system when the car is at points and O, and the change in potential energy as the car moves between these points. (b) Repeat part (a), setting the zero configuration with the car at point @.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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