Calculate how much work is done by the friction

Reference no: EM13326929

You are testing a new amusement park roller coaster with an empty car with mass 113 kg. One part of the track is a vertical loop with radius 11.9 m. At the bottom of the loop (point A) the car has speed 22.9 m/s, and at the top of the loop (point B) it has speed 7.3 m/s. As the car rolls from point A to point B, how much work is done by the friction?

Reference no: EM13326929

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