Pendulum (T212)

Subject Elec Eng

Set the values for the driving motor of a pendulum and observe its dynamic behaviour.

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OEL 1: Controlling a driven Pendulum

The pendulum is controlled by a driving motor that rotates a vertical shaft back and forth in clockwise and anticlockwise directions. The pendulum is attached to this shaft by a horizontal pin, allowing it to rotate freely in a vertical plane. The driving motor can be set to oscillate regularly, moving the pin and the pendulum between left and right so that the pendulum swings back and forth. The faster the oscillating driving motor rotates the shaft, the greater the angle that the pendulum swings from the vertical. A sensor is able to read the angular displacement of the pendulum through time.

In this activity, you can set the values for the driving motor and observe the dynamic behaviour of the pendulum. This will enable you to experiment with the motion of the pendulum and its mathematical description as a sine wave, and to observe the relationship between its frequency, amplitude and phase.

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