Solved: You are testing a new amusement park roller
Chapter 7, Problem 7.11(choose chapter or problem)
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 and at the top of the loop (point B) it has speed As the car rolls from point A to point B, how much work is done by friction?
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