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Teacup rides

The classical "Mad Tea Party" from Disney was inspired by Alice in Wonderland.  The photos show the teacup rides from Mack at Liseberg and Gröna Lund, where the experiments and data collection took place.

Motion of a rider

Which of the graphs  describes best the motion of a rider in a cup?

Watch a movie of the ride Kaffekoppen at Liseberg or use WolframAlpha to draw a graph of the motion.

Forces on a rider

Which forces act on a rider? Use a cuddly animal on a string with a protractor to measure the horizontal acceleration, as in the photo.

Accelerometer data