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Determine the initial height and loss of energy of a bouncing ball.
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Explore the relation of angular velocity and centrifugal acceleration using the gyroscope and the accelerometer. (For example when putting your phone into a salad spinner)
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Using the acoustic stopwatch you can determine the duration of a free fall. (Note, that there is an alternative version using magnetic detection.)
Drop the smartphone along an array of magnets and analyze the recorded magnetic field to extract the linear acceleration. (Note, that there is a simple an alternative version using acoustic detection.)
Continue reading “Free fall (magnetic detection)”
The smartphone is mounted on an air track and accelerated by a weight on a string. An array of magnets is used, so the linear acceleration can be explored by measuring the magnetic field.
Continue reading “Linear acceleration on an air track”
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Measure the frequency of a pendulum on a string. You can determine the gravity constant this way.
The smartphone is placed in a (tightly inflated) plastic bag. Through the pressure sensor, you can determine the changes in pressure when differen weights are placed on the bag.
This experiment was shown to us by Holger Jessen-Thiesen (Twitter), who also provided a worksheet in German, which has been translated by Solmaz Khodaeifaal (Simon Fraser University). The link at the top refers to a PDF version, but you can also use this docx file to adapt it to your needs.
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Put your phone into a paper roll and use the gyroscope to determine its speed.
This experiment is no longer available on iOS! (details)
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Measure the frequency of a pendulum on a spring.
