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Android Pendulums
| Content Provider | TeachEngineering: STEM curriculum for K-12 |
|---|---|
| Author | Bertelsen, Doug |
| Copyright Year | 2014 |
| Description | Students investigate the motion of a simple pendulum through direct observation and data collection using Android® devices. Student groups create pendulums that hang from the classroom ceiling, using Android smartphones or tablets as the bobs, taking advantage of their built-in accelerometers. Students investigate the motion of a simple pendulum through direct observation and data collection using Android® devices. First, student groups create pendulums that hang from the classroom ceiling, using Android smartphones or tablets as the bobs, taking advantage of their built-in accelerometers. With the Android devices loaded with the (provided) AccelDataCapture app, groups explore the periodic motion of the pendulums, changing variables (amplitude, mass, length) to see what happens, by visual observation and via the app-generated graphs. Then teams conduct formal experiments to alter one variable while keeping all other parameters constant, performing numerous trials, identifying independent/dependent variables, collecting data and using the simple pendulum equation. Through these experiments, students investigate how pendulums move and the changing forces they experience, better understanding the relationship between a pendulum's motion and its amplitude, length and mass. They analyze the data, either on paper or by importing into a spreadsheet application. As an extension, students may also develop their own algorithms in a provided App Inventor framework in order to automatically note the time of each period. |
| Language | English |
| Access Restriction | Open |
| Rights Holder | Regents of The University of Colorado Board of Regents, University of Nebraska |
| Subject Keyword | Algebra Measurement Physics Simple Pendulum Equation App Inventor Harmonic Motion Small-angle Approximation Android Device Pendulum Equation Android Acceleration Amplitude Acceleration Graph Periodic Motion Accelerometer Android Application Pendulum |
| Content Type | Text |
| Time Required | PT1H |
| Education Level | Class IX Class X Class XI Class XII |
| Pedagogy | Experimental Activity |
| Resource Type | Hands-on |
| Subject | Modern Physics Geometry |
