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I have a pendulum which is manually operated and so does not slow down. It is going at a frequency of 10Hz. It has a maximum angle of 25 degrees and length 10 cm. What are the equations of displacement that I can use?

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    $\begingroup$ Have you looked at the Wikipedia article on the pendulum? $\endgroup$ – Kyle Kanos Nov 10 '14 at 22:01
  • $\begingroup$ Can you be more specific about what "manually operated" means? 10 Hz is ten times per second, which is awfully fast for a pendulum. $\endgroup$ – Jason Chen Nov 10 '14 at 22:31
  • $\begingroup$ See Wikipedia "Pendulum mathematics" en.wikipedia.org/wiki/Pendulum_(mathematics) $\endgroup$ – Sofia Nov 21 '14 at 21:31

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