You are testing a new amusement park roller coaster with an empty car of mass 120 kg . One part

Name: 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?
Uploaded: 2022-12-26T04:53:55-08:00
Duration: 2 min 27 s
Channel: Ivan Kochetkov
Description: 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?

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Jaya M · Accepted Answer

First, we need to calculate the change in kinetic energy of the car as it moves from point A to

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