Compound pendulum app.

 

Code Number: 3A95.22

Demo Title: Compound Pendulum

Condition: Good

Principle: Determining acceleration due to gravity

Area of Study: Oscillations & Acoustics

Equipment: 

Compound pendulum app., knife edge support.

Procedure:

This pendulum in normally used to determine the acceleration due to gravity.  The pendulum can be mounted at several different axis along its length and the period of each axis can be observed.  From values of period and the length of an equivalent simple pendulum the acceleration due to gravity can be calculated.

References:

  • Peter F. Hinrichsen, "Rectangular Compound Pendulums", TPT, Vol. 61, #7, Oct. 2023, p. 572.
  • Peter F. Hinrichsen, "Practical Applications of the Compound Pendulum", TPT, Vol. 19, # 5, May 1981, p. 286.
  • Rod Cross, "A Double Pendulum Swing Experiment: In Search of a Better Bat", AJP, Vol. 73, # 4, April 2005, p. 330.
  • N. F. Pedersen, O. Hoffmann Soerensen, "The Compound Pendulum in Intermediate Laboratories and Demonstrations", AJP, Vol. 45, #10, Oct. 1977, p. 994.