Higher Physics Lab Mechanics

Coupled Pendulum Oscillations SK067


Exp-1 Study the characteristic frequencies of the uncoupled pendulum.
Exp-2 To determine the coupling factors for various coupling lengths, the angular frequencies or "in-phase" and "in opposite phase" vibration, and the angular frequencies of the beat mode.
Exp-3 To study the linear relation between the square of the coupling lengths, beat mode, and the square of the frequency for "in-opposite phase" vibration.
Exp-4 To determine the spring constant of the coupling spring.

  • Data logging interface.
  • Easy setup.
  • Multipurpose motion detector
  • Graphical analysis.
  • Coupled pendulum.
  • Uncoupled pendulum.
  • Phase difference.
  • Beat.
  • Coupling factor.
  • Coupling length.
  • Spring constant.
  • Physical pendulum.
  • Variable mass pendulum.

Two equal length pendulums with same mass have a particular characteristic frequency are coupled by a spiral spring. The amplitudes of both pendulums are recorded as a function of time for various vibrational modes and different coupling factors using a motion detector. The setup can be used to study “in-phase”, “in-opposite phase”, and “beat” mode.


Cat. No. Item Name Qty.
CD478 Couple pendulum rod 2
CD479 Couple pendulum weight 2
SH319 Support base 2
SH325 Support rod 2
CD480 Support beam 1
CD481 Mounting rod 2
CA384 Spring 1
MD-BTD Vernier motion sensor 2
IMC23 Vernier data logger 1

* Additionally Required
Computer not supplied with this setup.

Mechanics Experiments