Why does Pendulum have less SHM at longer amplitudes compared to shorter amplitudes ?

Monjur Alahi

The effect of Simple Harmonic Motion of a Simple Pendulum decreases with increase in Amplitude relatively than that of less amplitude.


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Salim Ahmed Kawsar

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The longer the length of string, the farther the pendulum falls; and therefore, the longer the period, or back and forth swing of the pendulum. The greater the amplitude, or angle, the farther the pendulum falls; and therefore, the longer the period.

For a real pendulum, the vertical rise is only approximately proportional to the angular displacement from equilibrium.

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