Code Number: 3A15.20
Demo Title: Physical Pendula
Condition: Excellent
Principle: Potential to Kinetic Energy, Simple Harmonic Motion
Area of Study: Oscillations & Acoustics
Equipment:
Rigid Pendula.
Procedure:
The rigid Pendula are used to show the characteristic differences of a pendulum that has the weight distributed through the length of the pendulum.
A simple pendulum with a length 2/3's of a physical pendulum will have the same period. In our case a 66 cm long simple pendulum has the same period as our 1 m physical pendulum.
Theoretically, the physical pendulum will have the same period when swung from the end of the pendulum or from a point approximately 29 cm from the end. In our case since the pivot point on the end is inward 1/2 cm, the other equal period point is at 32 cm from the end.
References:
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