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## Pendulums

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**Pendulums**Simple Harmonic Motion**Simple Harmonic Motion**• Pendulums and Springs are very similar. • They repeat the same cycle of motion over and over and over. • This is called Simple Harmonic Motion**Amplitude = Displacement**• Amplitude: How far away from the equilibrium position the pendulum swings.**Period**• Period: The amount of time needed for the pendulum to complete one full cycle. A B From ‘A’ to ‘B’ & back to ‘A’ again**Period**• For a pendulum the formula for Period is: L= pendulum length • To find frequency (the number of cycles per second) (Hz):**Practice**• Pg. 379, Practice B