Demos: 1S-33 Simple Pendulum (SHM)


The dependence of the period of oscillation of a simple pendulum on its length can be shown by selecting two identical bobs suspended by strings of different lengths, L and L’.

Directions: Choose L’ = L/4 and show that T =2 T’. To demonstrate that the period is independent of the mass of the bob, make L = L’ and m m'. Show that T= T’.

Suggestions for Presentation: None other than above. However, if you wish to extend the idea of a simple pendulum into the physical pendulum, discuss the effect of a bob whose diameter is not insignificant compared with the length of the string.



if R2 << L2, then we have the expression for the simple pendulum.

Applications: Pendulum clocks, swings, etc.

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Last Updated: May 9, 2016 11:44 AM