Abstract
Many modern cell phones have built-in sensors that may be used as a resource for physicseducation. Amusement rides offer examples of many different types of motion, where theacceleration leads to forces experienced throughout the body. A comoving 3D-accelerometergives an electronic measurement of the varying forces acting on the rider, but a completedescription of a motion also requires measurement of the rotation around the threeaxes, as provided, for example, by the iPhone 4. Here we present and interpretaccelerometer and gyroscope data that were collected on a rotary pendulum ride.
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