Solution Found!
Answer: You are testing a new amusement park roller
Chapter 7, Problem 11E(choose chapter or problem)
Problem 11E
You are testing a new amusement park roller coaster with an empty car of mass 120 kg. One part of the track is a vertical loop with radius 12.0 m. At the bottom of the loop (point A ) the car has speed 25.0 m/s, and at the top of the loop (point B) it has speed 8.0 m/s. As the car rolls from point A to point B, how much work is done by friction?
Questions & Answers
QUESTION:
Problem 11E
You are testing a new amusement park roller coaster with an empty car of mass 120 kg. One part of the track is a vertical loop with radius 12.0 m. At the bottom of the loop (point A ) the car has speed 25.0 m/s, and at the top of the loop (point B) it has speed 8.0 m/s. As the car rolls from point A to point B, how much work is done by friction?
ANSWER:
Solution 11E
Step 1 of 5:
In the given problem, we need to calculate the work done by friction when a roller coaster with empty car mass m= 120 kg moves from point A to point B in a vertical loop with radius r = 12 m with initial velocity at A is and final velocity at B is , as shown in the figure below